Materials:
Film canister or small pill bottle
ice
water
Put ice and some water in a bottle.
Put the lid on.
How much does it weigh? __________________________________
What do you expect to happen as the bottle warms? ________________
______________________________________________________
______________________________________________________
What do you expect to happen to the weight of the bottle of ice and water? ______________________________________________________
Roll the bottle in your hands to warm it.
Weigh the bottle again. What happened? ____________________
______________________________________________________
Why? ________________________________________________
______________________________________________________
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For the parent: Though this is only one experiment, it illustrates a point that you can affirm would be borne out by other similar experiments: in a chemical reaction matter is not lost. Matter changes form, but it is not destroyed.
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