Chemistry Chapter 1

Question 1

Nitrogen cycle

Answer 1

Nitrogen is essential for plants there for animals too

Plants get their nitrogen from nitrate in the soil and animals get it from eating the plants

Question 2

Why is carbon dioxide important?

Answer 2

It makes 0.04% of our air.

Question 3

Many gases are released in the air

What is one of the main causes of pollution?

Answer 3

Burning fossil fuels

S+O2=SO2

Question 4

Effects of acid rain

Answer 4

. Limestone buildings , statues are worn away

.lakes are acidified and can kill fish and ruin the soil

Question 5

Dangerous types of acid and what they do

Answer 5

.Nitrogen dioxide, it can kill people with asthma because it releases a photochemical smog.

.carbon monoxide it is a highly toxic gas . It combines with hemoglobin and stops blood from carrying oxygen

.lead is a neurotoxic metal and causes learning difficulties in in children

Question 6

Problems that pollution cause

Answer 6

.Polar ice will melt
.the surface temperature will increase
. Weather events will increase
.in some areas it may become easy to grow food but in some areas it won’t