Ch6 Molecules and Matter

Question 1

Density

Answer 1

mass/volume

Question 2

particles in a solid

Answer 2

held next to each other in a fixed position

vibrate in their fixed positions

Question 3

particles in a liquid

Answer 3

in contact with one another
move at random
flow over one another

Question 4

particles in a gas

Answer 4

move randomly and quickly
they are far apart
low density

Question 5

conservation of mass

Answer 5

when substance changes state, the number of particles in the substance stays unchanged

mass before equals mass after

Question 6

latent heat

Answer 6

The energy needed for a substance to change state

Question 7

specific latent heat

Answer 7

the amount of energy required to change the state of one kilogram of substance with no change in temperature

Question 8

specific heat capacity

Answer 8

the amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius

Question 9

energy for change of state

Answer 9

mass x specific latent heat

Question 10

Boyle’s law

Answer 10

pressure x volume = constant

Question 11

thermal energy

Answer 11

mc ∆ θ

Question 12

internal energy

Answer 12

total kinetic energy and potential energy of all
the particles (atoms and molecules) that make up a system

Heating changes the energy stored within the system by increasing the energy of the particles that make up the system(either raises the temperature of the system or produces a change of state)