7th grade science card 2

Question 1

the physical forms of matter solid liquid and gas

Answer 1

states of matter

Question 2

state of matter with a fixed shape and volume

Answer 2

solid

Question 3

state of matter with fixed volume but not shape

Answer 3

liquid

Question 4

the force that acts on the surface of a liquid and that tends to minimize the area of the surface

Answer 4

surface tension

Question 5

the resistance of a gas or liquid to flow

Answer 5

viscosity

Question 6

a form of matter that does not have a definite volume or shape

Answer 6

gas

Question 7

a measure of how hot (or cold) something is; a measure of the moment of particles

Answer 7

temperature

Question 8

a measure of the size of a body region in the three dimension space

Answer 8

volume

Question 9

the amount of force exerted per unit area of a surface

Answer 9

pressure

Question 10

the law that states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant

Answer 10

Boyle’s law

Question 11

Charles’s law the law that states that the volume of a gas is directly proportional to the temperature of a gas when pressure is constant

Answer 11

Charles’s law

Question 12

the change of a substance from one physical state to another

Answer 12

change of state

Question 13

the change of state in which a solid becomes a liquid by adding energy

Answer 13

melting

Question 14

the change of a substance from a liquid to a gas

Answer 14

evaporation

Question 15

the conversion of a liquid to vapor when the vapor pressure of the liquid equals the atmospheric pressure

Answer 15

boiling

Question 16

condensation

Answer 16

the change of a state from a gas to a liquid

Question 17

the process in which a solid changes directly into a gas

Answer 17

sublimation