Modeling Matter Review Question Preview (ID: 44810)
A Review For The Unit Test Of Modeling Matter.
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If you freeze a bottle of Pepsi that weighs 120 grams, how much will it weigh after it has solidified?
a) less than 120 grams
b) more than 120 grams
c) exactly 120 grams
d) It depends on how much Pepsi is in the can.
How do molecules in Powerade change when the Powerade is placed in the freezer?
a) The molecules start moving faster and get farther apart.
b) The molecules start moving slower and get closer together.
c) The molecules change from liquid molecules to solid molecules.
d) The molecules get bigger and stop moving.
What best describes Powerade that has been frozen?
a) It stays in one shape.
b) It is a liquid.
c) It takes up less space.
d) It weighs more.
Which of the following objects are too tiny, and cannot be viewed with the human eye?
a) an atom
b) a strand of dog hair
c) a drop of dye
d) a grain of salt
Which of the following objects are too tiny, and cannot be viewed with the human eye?
a) a drop of food coloring
b) a grain of sugar
c) a strand of hair
d) a molecule of water
If you add 30 grams of Jello powder to 100 grams of water, how much will the mixture of water and powder weigh?
a) 70 grams
b) 100 grams
c) 130 grams
d) 150 grams
Flour is not soluble in water. This means:
a) flour will not dissolve in water
b) flour can dissolve in water if you stir it enough
c) flour will disappear when it is mixed in water
d) flour has a white color
Baking soda will dissolve in water because
a) its molecules are tiny
b) it will spread out and attract to the water molecules
c) it has a clear color
d) it can melt
A white substance disappears when it is stirred in water. The substance could be:
a) flour
b) baking soda
c) cinnamon
d) pepper
Water and fat in a bottle do NOT mix. But when you add gelatin and shake the bottle, they mix! Why?
a) Fat and water do not attract to each other, but each will attract to gelatin.
b) Gelatin makes the fat and water molecules become smaller.
c) Gelatin is magic.
d) Gelatin is soluble.
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