vocab 4 science

Question 1

what is a kinetic theory?

Answer 1

it is an explanation of how particles in gases behave

Question 2

what is the melting point?

Answer 2

is the temp at which a solid becomes a liquid

Question 3

the heat of fusion

Answer 3

is the energy required to change a substance from solid to liquid at its melting point

Question 4

what is the boiling point

Answer 4

is the temp at which pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid

Question 5

what is the heat of vaporization

Answer 5

is the amount of energy required for the liquid at its boiling point to become a gas

Question 6

what is sublimation

Answer 6

is the process of a solid changing directly to a gas without forming a liquid

Question 7

what is thermal expansion

Answer 7

is an increase in the size of a substance when the temperature is increased

Question 8

what is plasma

Answer 8

is matter that has enough energy to overcome not just the attractive forces between its particles but also has attractive forces within its atoms