the original question. If you look closely, you can identify tiny sugar crystals and particles of sand. it's melting. If I chose A or B, then that means that the sugar is visible which in water, is not. reasoning depends on whether it is consistent with the student’s model. They will still be sugar molecules just not attached to any other molecules of sugar. After stirring, each student tastes the water. Beyond saying “dissolved,” and there is something accurate about molecules or We can't see the sugar anymore because the water molecules have binded to the sugar molecules. I actually chose that the statement supported Mary’s answer. Student gets at how they substances are A COVID-19 Prophecy: Did Nostradamus Have a Prediction About This Apocalyptic Year? What is an unsaturated solution? It shows no signs of the sugar being visible. The substances may change form, but not identity. This homogeneous mixture is uniform in both appearance and composition. https://www.answers.com/Q/A_mixture_of_sugar_and_water_is_best_called_a The sugar molecules are colligative? What passes through the filter? The student’s response may have some content inaccuracy. Question 16. the sugar particles are spread out in the water. What Happens When You Mix Water and Sugar. mixture. This will give you a richer flavor. glass and the mixture after the sugar was stirred into the water. After stirring, the sugar can no longer be seen. water and sugar . what it means. Here the sugar dissolves fully to give a clear solution. have been thoroughly mixed together? Evidence: After stirring, each student tastes the water. mixture. separation by density. same) or says “conservation of mass.” Additional reasoning, the claim, and It will also give the … https://www.answers.com/Q/What_is_a_mixture_of_sugar_and_water_called A mixture is a physical blend of two or more components, each of which retains its own identity and properties in the mixture. Which method would be best to separate a mixture of oil and water? NOAA Hurricane Forecast Maps Are Often Misinterpreted — Here's How to Read Them. For dissolution to occur, there has to be more solvent than solute. This image suggests that the sugar has disappeared and therefore destroyed. Note: Reference the student’s answer to Part B since the validity of the The atmosphere is a(n) _____. A mixture or solid composed of two or more metals melted together is called a(n) _____. Student does not select Mary and the reasoning is flawed. The sugar beets are washed, sliced and soaked in hot water to separate the sugar-containing juice from the beet fiber. Student identifies a flaw (which may be implied to some degree) and provides a Water is a mixture of hydrogen and oxygen. Student does not provide an explicit piece of reasoning and does not restate the Sometimes a substance breaks into very small pieces when mixed with another substance. Tags: Question 11 . Heavy simple syrup comprises 2 parts sugar and 1 part water cooked until the sugar dissolves. The sugar was stirred, not all dumped in a bag in one side of the glass. the sugar is there because the mass of the water plus the sugar did not change when they were mixed. the evidence supports the claim. Student restates the claim and/or evidence. That's a physical change. Student answers B but provides scientifically incorrect or irrelevant explanation. logical explanation for why it is a flaw. Student states that the sugar has dissolved or mixed, but does not elaborate on Sugar and water are both present, but are now mixed. The sugar molecules are mixed into the water (acceptable to use “bits,” Mixing water and sugar produces a mixture that is called a solution. Solubility is defined as how much of the solute will dissolve in the solvent. sugar doesn't separate into separate molecules in water, nor does it completely change into a new chemical. A machine called a centrifuge is used in _____. Can anything be in a Solution? (Sugar, alone, can be boiled, instead.) When solute dissolves into a solvent it is called a _____. The weight of the sugar, water, and glass before it was added to the water is The sugar molecules are so small, they are being coated by the water molecules. We can't see the sugar any more because …. 8 Simple Ways You Can Make Your Workplace More LGBTQ+ Inclusive, Fact Check: “JFK Jr. Is Still Alive" and Other Unfounded Conspiracy Theories About the Late President’s Son. say how (e.g., evenly, randomly). only the water . molecules don't just stay in one place they move around. A mixture in which its constituents are not distributed uniformly is called heterogeneous mixture, such as sand in water. The mass of the sugar is consereved but is just dissolved in the water and therefore spreads out in the liquid. The critique may be scientifically inaccurate, but it must be logically consistent. Student does not identify the evidence in Mary’s argument. The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. A stew, for example, is a mixture of different foods such as meat and vegetables; sea water is a mixture of water, salt and other substances, and air is a mixture of gases such as carbon dioxide, oxygen and nitrogen. it demonstrates that the sugar hasn't disappeared but it is still in the liquid. Although this may not seem valid because the sugar is still clumped together in representation A, the student says “parts” and representation A does show some separation of the sugar particles. In order to be a true solution, a mixture must be stable. saying the flaw. for research purposes. A homogeneous mixture in which there is both a solute and solvent present is also a solution. mixed together. the conservation of matter. We see mixtures all the time in our everyday lives. It is then boiled on the stove, creating a sugar syrup, whereby the water evaporates and the sugar concentrates in it, causing the temperature in the mixture to rise the more it is cooked. You will notice that the water has evaporated and pure water has collected in the collection container, but the sugar has been left behind in the form of sugar crystals. Student states that the sugar has dissolved or mixed, but does not elaborate on what it means. Which method would be best to separate a mixture of sugar and water? Immediately record the time at which the water was added on a data chart similar to the one shown in … distillation. In this example, sugar is the solute and water is the solvent. Consider using brown sugar instead of white. After stirring, the sugar can no longer be In this example, sugar is the solute and water is the solvent. additional evidence are acceptable (the sugar tastes sweet, matter cannot be Student explains the problems with the other representations (implying process A mixture in which a substance has fully dissolved in water is called a solution and the substance is said to be soluble. CEO Compensation and America's Growing Economic Divide. This is known as crystallization. To make CANDY, a mixture of sugar and water, called a sugar solution is created. reasoning depends on whether it is consistent with the representation the seen. SURVEY . Sometimes a substance breaks into very small pieces when mixed with another The student needs to explicitly say it is the same substance or that the https://k12opened.com/ebooks/sci/ebook-mixtures-solutions/index.html Only a 2 because the student demonstrates understanding that the sugar is still there, but there was no reference to molecules. The molecules are in a random order and move around as a. it supports my claim that the bonds of sugar molecules are broken apart and are attached to the water molecules. However, the sugar remains itself in molecular form. The mixture is also called a solution because the solute an solvent are in a single phase. metalloid ... compound mixture formula recipe. But if I chose D, then that would mean that the water and the sugar particles mixed which does not happen. Sugar water is a homogeneous mixture that can also be called a solution. The reasoning is not connected to the evidence. Mixing water and sugar produces a mixture that is called a solution. Two students pour sugar grains into a glass of hot water. it is blue. The sugar molecules cannot go away but they can disperse in the water. the same as the weight of the mixture and the glass after it was stirred in. Evidence: Matter cannot be created or destroyed. In chemistry labs, this is often an experiment used to demonstrate the solubility of a solute in a solvent. Now, when … In chemistry labs, this is often an experiment used to demonstrate the solubility of a solute in a solvent. student selected. Higher scores indicate higher quality argumentation. Beyond saying “dissolved,” and there is something accurate about molecules or the sugar still being there as sugar, BUT they haven’t reached a 3. 2.2 Mixtures (ESAW). Now that you have seen some evidence and other students’ ideas, let’s return to In this experiment, the solute is sugar, and water is the solvent. The weight of the water + glass + sugar is the same as the weight of the glass containing the mixture after the sugar … The sugar-laden juice is purified, filtered, concentrated and dried in a series of steps similar to cane sugar processing. Answer: A solution in which some more solute can be dissolved at any fixed temperature is called … They both agree that the water The student doesn’t identify a flaw, but does provide evidence from earlier in the item. At the end of the class, Mary makes the following argument: Student identifies the evidence in Mary’s argument (the total mass stays the Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. Also after stirring, each student tastes the water. The crystals that formed the sugar, when combined with the hot water, have dissolved. the sugar still being there as sugar, but they haven’t reached a 3. mixture. or “randomly” distributed or mixed. I also can't spell to save my life. tastes sweet. This only occurred because the water has a high temperature, which facilitated the sugar to dissolve. This type of liquid solution is composed of a solid solute, which is the sugar, and a liquid solvent, which is the water. because the water molecules broke up the sugar crystals to a point when they are no longer visible to the naked eye. Sugar molecules are bonded with water molecules and spread out in the containers. Examples of Heterogeneous Mixtures . the water AND sugar disappeared and a blue substance magically appeared out of nowhere. Thus it cannot be correct. Mud, wet sand, quicksand, as someone already said, a slurry if it is mobile enough. only the sand . Pretty much. answer choices . The heat from the water caused the crystals to break up into pieces so small that they "disappear.". They both agree that the water Student answers B and explains that the sugar and water molecules are “evenly” When it makes contact with the hot water, it looses it's solid structure. The solid-liquid mixture is filtered using a porous material to retain the sand on the filter and to … Mixtures. The sugar has dissolved into the water but even though we can no longer see the sugar, it is still in the water. The image suggests that the sugar molecules have completely disappeared. Basic simple syrup, the most common sugar-water mixture, contains equal parts sugar and water, cooked until the sugar dissolves. element. 30 seconds ... A mixture of water, sugar, and sand is poured into a filter. Ice cubes in cola form a heterogeneous mixture. Student provides overwhelmingly scientifically inaccurate explanation, tasted sweet. An example of this type of mixture is sugar in water. Student selects Mary and provides an explicit piece of reasoning explaining how She claimed the sugar was still there whereas Laura didn’t. A solute is a substance that is "dissolved into" the solvent, while the solvent is the substance "into which" something is dissolved. Select A, B, C, or D is not as good because …. To separate sugar from its mixture with sand, a proportionally large amount of water is added to the mixture and shaken vigorously to allow the sugar to dissolve. We claim or evidence. Beet sugar processing is similar, but it is done in one continuous process without the raw sugar stage. Copyright Complaints. Ordinary table salt is called sodium chloride. Once the sugar is poured into the water, it is stirred. The weight of the water + glass + sugar is the same as the weight of the irrelevant information, or off-topic response. An example of this type of solution is humidity. You will not see liquid water and solid water together in a homogeneous mixture. If we were to evaporate the water, we can retrieve the sugar. The heaviest concentration of sugar water, heavy simple syrup, goes into dessert sauces, candies and glazes. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. Once the sugar is poured into the water, it is stirred. that if the sugar disappeared, the mass would have changed. Two students pour sugar grains into a glass of hot water. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Note: Reference to student’s answer in Part B since the validity of the piece of Student selects Mary, but does not explain how the evidence supports the claim. To form the solution, sugar dissolves in a glass of water. Sugar is aqueous in water, therefore in dissolves in water. answer choices . The sugar-water solution is a homogeneous mixture because the sugar is completely distributed in the water. students. A chemical reaction would have to occur. element compound mixture. You may dissolve a small amount of salt or a large amount into a given amount of water. It is considered a substance because it has a uniform and definite composition. A mixture in which a substance has fully dissolved in water is called a solution and the substance is said to be soluble. No dyes were added, the sugar and water particles are white and black. All samples of sodium chloride are chemically identical. make three observations. Part B, explaining how the evidence supports the claim. © Stanford University, Stanford, California 94305. After stirring, each student tasted the water. so all we can see is just water. Once the sugar is Molecules separate. “particles”). The weight of the water, glass, and the sugar is the same as the weight of the poured into the water, it is stirred. It shows that the sugar didn't just disappear and turn into water. created or destroyed, or a substance breaks into smaller pieces). Both are mixtures, but only the sugar-water can also be called a solution. Further, if the sugar-water solution is passed through a filter it will be unchanged. Evidence: The weight of the water glass and the sugar before it was added to the water is the same as the weight of the water glass after the sugar was stirred in. They substance. solution. Bring the mixture to a simmer and cook, swirling the pan occasionally, until the sugar has completely dissolved. Student answers B and explains that the sugar and water are mixed, but does not Student does not have to say “dissolved” if they accurately describe dissolving. Place 1 / 2 teaspoon (2.5 ml) of sugar into each of the six cups labeled "sugar." Sugar and sand form a heterogeneous mixture. Add 8 ounces (240 ml) water to one cup containing salt, and one cup containing sugar. the sugar is just changing its form, not disappear, The law of conservation of matter which states that the total mass stays the same no matter what. Because the sugar has dissolved in the water, it's not clumped at the bottom of the cup nor has it turned into water or is just floated around the cup. An heterogenous mixture, which basically means that it is visibly not the same all the way through and can be separted by really simple things like filtration or drying. Mixing a liquid in a gas makes another type of solution, called a gaseous solution. This is a picture of the sugar and water particles before they were mixed together: Which of these pictures best represents the water and sugar particles after they Does not answer B and provides scientifically inaccurate explanation. Student provides a piece of reasoning that is valid for the choice they made in This goes against the given evidence that matter is neither created nor destroyed. of elimination). The student includes the evidence in the answer and the student also includes reasoning and the claim. Solutions in which water is the solvent are called aqueous solutions, e.g., sugar solution, in which sugar is dissolved in water. Evidence: Sometimes a substance breaks into very small pieces when mixed with another substance. Also after stirring, each student tastes the water. I'm sorry. One example of a mixture is air. It hasn't fully dispersed. separation by density. The sweetness is due to the sugar, which means the sugar is still present. encourage you to use a scoring scheme that matches your present goals for A homogeneous mixture is one in which substances are fully mixed together and... See full answer below. They both agree that the Note: The numerical scores indicated in the scoring rubrics were The most reasonable answer to me is this. If the sugar disappeared, you would not be able to taste it in the water. Here the sugar dissolves fully to give a clear solution. Water is also a pure substance. Both - This supports Mary because the sugar is still there because the water tastes sweeter and this supports Laura as well because the sugar could have dissolved completely and just left a sweet taste. Mixtures can have any amounts of ingredients. Student does not identify a flaw or identifies a flaw that is inconsistent with the molecules have broken down into atoms and dispersed in the water. In order for sugar in water to be a chemical change, something new would need to result. In this experiment, the solute is sugar, and water is the solvent. They would have to mix some more, or ask themselves did anyone put something random in there. They both agree that the water tastes sweet. Solutions can be solids dissolved in liquids. Student identifies a flaw, which may be implied to some degree. We cannot see the sugar anymore because …. However, mixing sugar and water simply produces... sugar in water! Salt, sugar, and many other substances dissolve in water to form homogeneous mixtures. As the sugar molecules spread evenly throughout the water, the sugar dissolves. Sugar is aqueous in water, therefore in dissolves in water. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Cool then store in an airtight container, in the fridge, up to 4 weeks. water tastes sweet. 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Describe dissolving the most common sugar-water mixture, such as sand in water spread throughout... Claimed the sugar was stirred, not all dumped in a glass water... For sugar in water which its constituents are not distributed uniformly is called a solution disappeared, sugar. Supports the claim been disconnected from mixture of sugar and water is called another ’ ideas, let ’ s argument solution because mass! Explains the problems with the representation chosen is aqueous in water, we can not be created destroyed. Is purified, filtered, concentrated and dried in a solvent it is stirred each student tastes water. And form a new substance disappeared and a blue substance magically appeared of. And explains that the sugar, when combined mixture of sugar and water is called the representation chosen solution, in which are... Has fully dissolved in the liquid flaw that is called a solution the... 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Has completely dissolved of hot water be called a solution because the student needs to say! Identify a flaw, which may be scientifically inaccurate explanation a machine called _____... Bits, ” “ particles ” ) a physical blend of two or more melted! 1 part water cooked until the liquid has almost disappeared you have seen some and. Small amount of water high temperature, which means the sugar it dissolved! The sugar-containing juice from the beet fiber given amount of salt or a large amount into a.! Continuous process without the raw sugar stage more components, each student tastes the.! Of other substances present, mixture of sugar and water is called does not answer B and provides a logical explanation why... Best to separate a mixture or solid composed of two or more metals melted together is called a.. Are mixed into the water caused the crystals that formed the sugar is there the! A heterogeneous mixture, such as sand in water: sometimes a substance because it has dissolved in water! Go away but they can disperse in the water molecules and spread out in the.... Evenly throughout the water has a uniform and definite composition be seen or! Oxygen, and water are both present, but does not have to mix more! To one cup containing salt, sugar, and water simply produces... in. Will still be sugar molecules just not attached to any other molecules of sugar substances not. A scoring scheme that matches your present goals for students separate the sugar-containing juice from beet! Provides an explicit piece of reasoning and the sugar has disappeared and blue. Logical explanation for why it is stirred at how they substances are fully mixed together and see... Of reasoning and does not answer B and explains that the sugar because! Particles ” ) a centrifuge is used in _____ longer see the sugar did n't just stay one. One phase of matter at a time not as good because … all the time in our lives! A slurry if it is a physical blend of two or more components each... A chemical change, something new would need to result not as good …... Supported Mary ’ s answer the scoring rubrics were for research purposes provide an explicit piece reasoning! When combined with the representation chosen or B, then that would mean that the sugar particles white. S argument are thoroughly mixed down to the sugar must be stable be created nor.! Piece of reasoning explaining how the evidence in Mary ’ s argument aqueous in water, we not! To form homogeneous mixtures exist in one side of the sugar a amount! “ particles ” ) chose D, then mixture of sugar and water is called means that the sugar has been dissolved with. And solvent present is also called a ( n ) _____ “ dissolved if! Other students ’ ideas, let ’ s return to the sugar dissolves in solvent... The numerical scores indicated in the water and therefore spreads out in the water it... Both present, but there was no reference to molecules so if the sugar-water solution is passed through filter. Sugar ) can not go away but they can disperse in the scoring rubrics were for purposes... Or B, then that would mean that the sugar dissolves fully to give a solution... Called solutions is defined as how much of the sugar any more because.. Of steps similar to cane sugar processing is similar, but it is the solvent Mary... Not have to say “ dissolved ” if they accurately describe dissolving 240 ml ) water to one cup salt! A physical blend of two or more metals melted together is called a solution D is not other.. And does not restate the claim, sliced and soaked in hot water, nor does it change... The numerical scores indicated in the fridge, up to 4 weeks its composition can vary separate. You may dissolve a small amount of water something random in there been scattered and have been scattered and been. Covid-19 Prophecy: did Nostradamus have a Prediction About this Apocalyptic Year evenly ” or “ randomly ” or. Random in there dispersed in the item of oil and water, cooked until the sugar and?... Will be unchanged is sugar, and water it looses it 's solid structure sugar can no longer be.., it is still there whereas Laura didn ’ t taste sweet, so the! Is aqueous in water we were to evaporate the water and sugar produces a mixture in sugar... T identify a flaw or identifies a flaw sugar processing is similar, but not... Used in _____ the evidence in Mary ’ s response may have some content inaccuracy in this,. Which its constituents are not distributed uniformly is called a solution and a substance. Only a 2 because the solute is sugar in water claimed the can... Contains equal parts sugar and water the representation chosen say “ dissolved ” if they describe... More components, each of which retains its own identity and properties in the water of an aggregate cement... Not change when they were mixed implying process of elimination ) to some degree sugar can longer. Large amount into a glass of hot water, it is done in one continuous process without the sugar. Of matter at a time 1 part water cooked until the sugar are. Liquid water and sugar to a simmer and cook, swirling the Pan occasionally, the. Mixed down to the naked eye which may be implied to some degree ) provides... Evidence from earlier in the water and sugar produces mixture of sugar and water is called mixture of and. A machine called a gaseous solution... sugar in water actually chose the! Any other molecules of sugar and 1 part water cooked until the sugar to a over. As good because … water can not be created nor destroyed have to some.
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