Properties of hydrocarbons

Question 1

What is the boiling point?

Answer 1

The temperature when a liquid turns into a gas

Question 2

Why do we use hydrocarbons as fuels?

Answer 2

They release massive amounts of energy when we burn/combust them

Question 3

Are shorter chains less or more flammable?

Answer 3

More flammable

Question 4

Are longer chains less or more flammable?

Answer 4

Less flammable

Question 5

If something is thick does it have low or high viscocity?

Answer 5

High viscosity

Question 6

If something is runny does it have low or high viscocity?

Answer 6

Low viscocity

Question 7

What is volatility?

Answer 7

How easily something evaporates

Question 8

What is combustion the scientific word for?

Answer 8

Burning

Question 9

For combustion to occur you need what?

Answer 9

Oxygen

Question 10

Incomplete combustion occurs when there is not enough…

Answer 10

oxygen

Question 11

Complete combustion produces…

Answer 11

carbon dioxide and water

Question 12

Incomplete combustion produces…

Answer 12

Carbon monoxide and water

Question 13

Name 3 problems with burning hydrocarbons (think about the products of combustion)

Answer 13

Carbon dioxide - it’s a greenhouse gas. Increasing concentrations in the atmosphere contributes to global warming
Carbon monoxide - It is a toxic gas, so adequate ventilation is important when burning fuels
Carbon - Carbon is released as soot or smoke. This reduces the amount of sunlight reaching the Earth’s surface (global dimming)