States of Matter
solid, liquid, gas
Name a chemical change you see in your life.
Frying an egg, baking a cake, making a fire, toasting bread
What is the boiling point of water?
100oC/ 212oF
State of matter that can change its shape easily
liquid
temperature and physical state
What type of change happens where it does not make a new substance?
physical change
The mass of a substance A is 22 grams and the mass of substance B is 116 grams. What is the total mass of the two new substances?
138 grams
State of matter that does not change shape
solid
What law states that in any chemical change or physical change, the total mass of the matter does not change
Conservation of Matter
When a chemical change occurs, the particles that make up the original substances rearrange to form what?
New substances
What two items combine to make copper oxide?
copper and oxygen
State of matter that does not have a definite shape
A new substance is formed
chemical change
How can you tell that a change in a material is physical?
It is the same substance before and after the change
What is the melting point of water?
0oC/ 32oF
This is what happens when particles leave a liquid and become a gas
Evaporation
A mixture in which substances are spread out evenly and do not settle at the bottom of the container
solution
How can you separate salt from water in a saltwater solution?
Water can evaporate and salt cannot. If you heat the saltwater solution to speed up evaporation, you will be left with salt.
What is it called when different materials are placed together, but each material keeps its own properties?
mixture