P3

Question 1

What is the equation for density ?

Answer 1

density= mass/volume, P(dogy p)= m/v

Question 2

What is the unit for density?

Answer 2

kg/m^3

Question 3

required practical, order these steps:
-place your irregular object in the can
-weigh the object
-use weight and volume to calculate mass
-use the measuring cylinder to see the amount of water displaced (aka the volume
-fill a displacement can with water and connect a measuring cylinder

Answer 3

1)weigh the object
2)fill a displacement can with water and connect a measuring cylinder
3)place your irregular object in the can
4) use the measuring cylinder to see the amount of water displaced (aka the volume
5) use weight and volume to calculate mass

Question 4

What do you call a gas going into a liquid?

Answer 4

condensation

Question 5

what do you call a gas going straight to a solid?

Answer 5

deposition

Question 6

what do you call a solid going straight to a gas?

Answer 6

sublimation

Question 7

What do you have to combine to get internal energy?

Answer 7

if you combine all the kinetic energy and potential energy, and this will give you a value for the internal energy

Question 8

Distinguish between specific heat capacity and specific latent heat

Answer 8

Specific heat capacity is the amount of energy required to change the temperature of a substance, while specific latent heat is the amount of energy required to change the state of a substance

Question 9

why the molecules of a gas are in constant random motion

Answer 9

colisions

Question 10

if volume is increased to a gas what would happen to pressure

Answer 10

it would decrease