does kool aid dissolve better at different temperatures?

Answer 1

Dissolving races:


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Objective: Students will demonstrate an understanding that solids dissolve in warm liquids faster than cold liquids. Students will practice making words accurately represent and describe relationships.

Materials:

1. Food colors

2. Gatorade or Kool-aid powdered mix .

3. About 2 gallons of cold water. (Put ice in 2 gallons.)

4. About 2 gallons of hot water.

5. Enough clear plastic cups for everyone in the class.

6. Two clear plastic bottles. (12 oz. or so)

7. Enough sticks for each student to stir.

Your school should already have a source of very hot water to sanitize mops. Bring ice in a cooler if it is not available on your campus.

Focus: Quickly tell the students that we can learn and make predictions if we use what we know and apply it to new situations.

Model: Show how Gatorade dissolves in a cup. It can be declared dissolved when the liquid is rather clear and no more crystals of Gatorade can be seen . Model how the races will be conducted. Create teams of three or four. One team has cups of cold water. The other team has cups of hot water. Fill each cup only half way. Put in only a 1/2 teaspoon of Gatorade in each cup. Who will win the race to dissolve the Gatorade? This race must have impartial judges. The students will quickly recognize the unfair pattern. It may only take a few turns before the class is ready to reach a conclusion. This race is unfair because the team with the hot water always wins. Have the students suggest solutions to make the race fair. Now do the races so that each team has the same temperature water. Change groups and let everyone have a chance to be on a winning team at least once.

Now test their application of what we saw in a new situation: Submerge or otherwise fill the plastic bottles, one hot and the other cold. Have the students take turns comparing and contrasting the two. Allow a few students to hold the two and compare and describe the temperature difference. Do they hold different amounts of water? (No) What is the only difference between these two bottles? (The temperature should be the only difference.) Have the students record predictions into their journals as to what will happen when the color is added to the water. Drop the same number of the same color drops in each bottle and let them stand still. Let the students observe. Have the students suggest what you could write on the chalkboard to summarize what happened and answer the predictions. Keep probing them to state what happened and model how you can write sentences from sentences that are spoken. Show how a writer uses speech to generate ideas for writing. Have them demonstrate that they understand the results in a short quiz:

1. The Gatorade will dissolve in the _______ water faster than the ______water.

Choose: hot ,cold

2. Two men go to a restaurant. One has hot coffee. The other has iced tea. Which man will stir longer and faster to dissolve a teaspoon of sugar? You might choose here to introduce a modest strategy to help solve the question. Draw a picture of the two men. Draw a picture with steam coming out of the coffee cup and condensation on the tea glass. This may help some students to distinguish the parts of the question.

Close: Have the students think and list other ways that we can learn things by making comparisons, making tests and by using language to describe what we experience. At the end let everyone dissolve their own Gatorade or Kool-aid in their own cups and drink it!

Answer 2

Yes and no, warmer water can hold more of whatever is being mixed into it when it's warm. The heat helps to dissolve the solid and warmer molecules move faster and attach themselves faster to other molecules. It's like if you are filling up a buses, if a bus comes along once an hour it takes a lot longer to fill up a hundred buses than if the buses came every ten minutes. Not only that when buses come along every ten minutes, they have to travel faster around their route than the buses that reach each stop along their route every hour. But unlike buses, when molecules are heated, they not only travel faster but become become elongated the faster they go, so if a bus became more elongated the faster it travelled, the more people each bus could hold. This is what happens when you heat water, it travels faster, it reaches the kool aid molecules faster and the water molecule becomes elongated and the same molecule can hold more kool aid molecules than a cooler water molecule.

However, temperature also creates different chemical effects. Hotter is not always better as anyone who has over boiled milk while making hot choclate, the fat in the milk oxidizes and the hot choclate tastes awful. But if you added the choclate while the milk was warm but not warm enough to oxidize the fat in milk, the hot choclate tastes a lot better.

When you make popsicles, you add all the ingredients into hot water and if you drink it, it tastes awful. But when you freeze the mixture, certain chemical reactions occur and the popsicles tastes good.

Just like you can't change burnt toast to unburned toast, once some chemical reactions happen, you can't undo them.

So the answer is it depends. Kool Aid will react differently with water at various temperatures. Kool Aid will dissolve the best in boiling water, but boiling water will carbonize some of the ingredients in the Kool Aid, particularly any startches and it won't taste good as good if the Kool Aid were added to hot water, but not hot enough to boil.

It will take longer to dissolve in warm water, but since the ingredients dont' carbonize, when the kool aid is put in the fridge and cools, it tastes a lot better.

Answer 3

Most substances will dissolve more easily at higher temperatures because the molecules are moving faster. So Kool-Aid will dissolve better in hot water than in cold.

Answer 4

I usually dissolve the Kool Aid powder and some sugar in room temperature water then add cold water before serving.

Answer 5

Solutes usually dissolve better at warmer temperatures. For example, if you are going to make sweet tea, you need to add the sugar while the tea is still hot. If you wait until it is cold, you just get a bunch of floating sugar granules and semi-sweet tea.

Answer 6

Since Kool-Aid is ultimate junk (flavored sugar) it would be better not to dissolve it at all.

Answer 7

Warm water dissolves that better, but then you gotta wait for it to get cold even longer

Answer 8

yes. try dissolving it and the suger in 2-3 cups hot water then add the rest of the water cold.

Answer 9

if you heat the water it would dissolve faster but I dont know why you would want to do that...