Vocabulary
Five
Heating up a campfire
Change in thermal energy
What chemical change happens whenever you see bubbles and smell an odor after mixing two substances
Formation of a Gas
What is the word for a solid forming in a liquid?
Precipitate
Pouring a liquid into a cup and it turns into a solid
Production of a precipitate
What chemical change happens whenever we notice the temperature drop in a substance
Change In Thermal Energy
You put an antacid tablet into a water bottle and you start to see bubbles
Production of a gas
You mix together two substances, and one starts to form into a cotton candy like solid in the other substance. What chemical change is this?
Production of a Precipitate
You do the iodine time clock experiment and see the water color change from clear to black in almost an instant
Color change
You put together two substances and they are both clear. Once they mix together, the substances turn into a bright blue glowing color. What chemical change is this?
Whenever you cook foods, does a chemical change occur? (EX: baking a cake, cooking eggs, cooking steak)
Yes, if you cannot separate the food back into its original contents, a chemical change has occured.
What are the three chemical changes in a campfire?
Production of gas, color change and change of thermal energy
Are chemical changes permanent? What about physical changes?
Chemical changes are permanent, Physical changes are not.