P6

Question 1

What is the formula for density?

Answer 1

Density =mass divided volume

Question 2

How do you find the density of an regular shaped object?

Answer 2

1. Measure the mass of each object using a balance
2. Measure the width, length and depth of each object with a ruler
3. The volume is calculated by multiplying the three lengths together
4. To calculate the density = mass divided my volume

Question 3

How do you find the volume irregular shaped object ?

Answer 3

1. Measure the mass of the object using a scale ( displacement can)
2. Then fill up a displacement can of water so it is full and ready to use
3. Lower the object into water and hold and empty beaker
4. Measure the volume of the displaced water
5. Then use the equation of Density= mass divided volume

Question 4

What does specific heat capacity mean?

Answer 4

Specific hat capacity is the thermal energy required to raise the temperature of a body of mass 1kg by 1k

Question 5

What does specific latent heat mean?

Answer 5

Specific latent heat is the amount of energy needed to change the state of unit mass of a pure substance without a change in temperature
E= m x l

Question 6

What is internal energy

Answer 6

The molecules with inna body all possess kinetic energy. This is the energy due to their random motion

Question 7

What is the formula of internal energy ?

Answer 7

Internal energy= kinetic energy ( how fast molecules move) + potential energy bonds

Question 8

What is a fluid

Answer 8

A fluid refers to a liquid as a gas as the particles in both are able to flow,be fluid

Question 9

When you pull the syringe that is blocked and has a marshmello inside what happeneds?

Answer 9

It decreases the pressure

The pressure on the outside of the marshmallow is less than before.