Effect Of Heat On Matter

Question 1

Heat has a variety of effects, such as:

Answer 1

Changing state of substance 
Accelerating most chemical reaction 
Change temp of substance 
Changing the internal structure 
Expansion

Question 2

When a solid is heated, it expends, in what directions?

Answer 2

Length, breath and depth

Question 3

What is contraction?

Answer 3

A negative expansion

Question 4

What dose the value of change depend on?

Answer 4

Rise or fall of temp
The original length
Material

Question 5

The increase in volume of a body of liquid on heating is referred to as what?

Answer 5

Volumetric expansion

Question 6

What are the 3 factors required to measure the quantity of heat energy in a body?

Answer 6

Mass
Temperature
Specific heat capacity

Question 7

What is the calorific value?

Answer 7

The total amount of energy that can be produced by the complete combustion of unit mass of a fuel

Question 8

What is super heat?

Answer 8

Is when the liquid is heated to a temp higher than it’s boiling point

Question 9

If you increase the pressure of a liquid what happens to the boiling point?

Answer 9

Rise

Question 10

Evaporation and condensation are changes of states. What are they?

Answer 10

Evaporation involves a liquid changes into a gas

Condensation involves a gas changed to a liquid

Question 11

What factors effect evaporation?

Answer 11

Surface area of liquid

Air passing over the surface