metals & the atmosphere

Question 1

what burns bright white in oxygen forming a white solid?

Answer 1

Magnesium

Question 2

Which metals are more reactive than hydrogen but less reactive than carbon?

Answer 2

Pb, Fe, Zn - lead, iron, zinc

Question 3

The sea of delocalised electrons causes metals to have what property?

Answer 3

able to conduct electricity

Question 4

Can you identify the conditions needed for rusting?

Answer 4

Water and oxygen

Question 5

Can you identify the common gases in the atmosphere

Answer 5

nitrogen - 78%
oxygen - 21%
argon - 0.96%
carbon dioxide - 0.04%

Question 6

Can you describe tests for carbon dioxide?

Answer 6

bubbling it through limewater - if the limewater turns cloudy, carbon dioxide is present

Question 7

Can you describe tests for oxygen?

Answer 7

take a glowing splint and put it in a test tube with a sample of gas - if it re-ignites the gas is oxygen.

Question 8

Can you describe tests for acids?

Answer 8

Blue litmus paper turns red if the substance is acidic

Question 9

Can you describe thermal decomposition?

Answer 9

A thermal decomposition reaction is when heat energy is used to break down a substance.
Metal carbonates thermally decompose to form metal oxides and carbon dioxide