Matter and Energy

Question 1

Matter

Answer 1

anything that has mass and volume

Question 2

Physical property

Answer 2

characteristics, adjectives observed without changing the substance

Question 3

Physical change

Answer 3

verb change in appearance, NOT the substance

Question 4

Chemical property

Answer 4

adjective- how reactive a substance is

Question 5

Chemical change

Answer 5

verb changing a substance into NEW material

Question 6

Evidence of chemical change

Answer 6

change in color, change in energy, gas formation, formation of a precipitate, (sometimes change in smell)

Question 7

Law of conservation

Answer 7

matter and energy can not be created or destroyed, it can only be transformed

Question 8

Kinetic theory of matter

Answer 8

All matter is made of atoms that are in constant random motion

Question 9

Endothermic change/ Exothermic change

Answer 9

energy is absorbed and kinetic energy increases. exothermic change is when energy is released and kinetic energy decreases

Question 10

Latent Energy

Answer 10

energy used to weaken intermolecular forces, which allows phase change to happen.

Question 11

Pure Substance

Answer 11

one substance present only