Conservation Of Matter Question Preview (ID: 48853)


A Review Of The Law Of Conservation Of Matter. TEACHERS: click here for quick copy question ID numbers.

A student places an ice cube in a jar and closes the lid. The ice cube weighs 28 grams. The jar weighs 100 grams. The student sets the jar in a window by the sun. How much will the jar and water together weigh after the ice melts in the sun?
a) 28 grams
b) 128 grams
c) 72 grams
d) 100 grams

30 grams of baking powder and 30 grams of vinegar are placed in a jar with a lid, and the mixture is shaken. How much will the new liquids and gases weigh together?
a) less than 60 grams since a gas forms
b) 60 grams
c) more than 60 grams
d) this information cannot be determined

A stick of butter (113 grams) melts. How much should the liquid butter weigh?
a) less than 113 grams
b) 113 grams
c) more than 113 grams
d) this information cannot be determined

30 grams of vinegar is poured into 30 grams of baking soda in a jar that does NOT have a lid. Why will the new substance that forms weigh less that 60 grams?
a) Since the jar is open, some of the gas matter rises up out of the jar.
b) Some of the matter is destroyed by the experiment.
c) Some of the solid matter becomes a liquid and gas.
d) It should still weigh 60 grams.

20 grams of water is poured into a jar with 10 grams of sugar, and it is stirred. How much does the sugar water mixture weigh together?
a) less than 30 grams because the sugar dissolves
b) more than 30 grams
c) 30 grams
d) this information cannot be determined

20 grams of water is poured into a jar with 10 grams of pepper, and it is stirred. How much does the pepper water weigh together?
a) less than 30 grams because the pepper does not dissolve
b) 30 grams
c) more than 30 grams because the pepper does not dissolve
d) this information cannot be determined

100 grams of cheese is melted in a microwave. How much should the liquid cheese weigh?
a) 90 grams
b) 100 grams
c) 110 grams
d) more than 110 grams

If 1 gram of food coloring is dropped into 10 grams of water, the mixture will weigh:
a) 11 grams
b) 10 grams
c) 9 grams
d) less than 9 grams

30 grams of salt is poured into 100 grams of water. How much will the salt water mixture weigh after the salt dissolves?
a) 70 grams
b) 100 grams
c) 130 grams
d) this information cannot be determined

10 grams of milk is poured into 200 grams of coffee. How much will the milk and coffee weigh together?
a) 210 grams
b) 200 grams
c) 190 grams
d) 10 grams

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