revision atomic structure

Question 1

What is the atmosphere?

Answer 1

A layer of gasses retained by gravity.

Question 2

What are the names of the four layers of the atmosphere from earth to space?

Answer 2

Troposphere, Stratosphere, Mesosphere and Thermosphere

Question 3

What percentage of Oxygen and Nitrogen is there in the atmosphere

Answer 3

Oxygen: 21% Nitrogen: 78%

Question 4

If you burn copper in 100cm^3 of air and end up with 80cm^3, what % of the air is oxygen?

Answer 4

around 20%

Question 5

Complete the equation: Copper + Oxygen > ________

Answer 5

Copper Oxide

Question 6

How do you test for Oxygen?

Answer 6

Put a recently blown out (glowing) splint in the oxygen and if Oxygen is present the splint will relight.

Question 7

How do you test for Carbon Dioxide?

Answer 7

The best way is to bubble the Carbon Dioxide into limewater and if Carbon Dioxide is present it will turn the limewater cloudy.

Question 8

Does Oxygen support combustion?

Answer 8

Yes

Question 9

Does Carbon Dioxide support combustion?

Answer 9

No

Question 10

Does Nitrogen support combustion?

Answer 10

No