Particle model of matter (1)

Question 1

How to measure the density of a regular and irregular object

Answer 1

regular- use the equation density= mass/volume

irregular-
. find object mass using a balance
. find the volume by placing the object in a eureka can and
measuring the displaced volume of water
. use the equation density= mass/volume to find the density

Question 2

what is the internal energy of an object

Answer 2

the sum of the energy of an object in its kinetic and potential stores

Question 3

what is specific latent heat

Answer 3

the amount of energy needed to change 1kg of a substance to another state without changing its temperature

Question 4

what happens to the internal energy of a gas if you increase the temperature

Answer 4

internal energy increases

Question 5

how is pressure created
how can it cause a change in volume

Answer 5

colliding gases exert a force at 90 degrees which is pressure
it can change an objects volume because there’s also an external pressure because of the gas molecules outside of an object