Chemical Changes

Question 1

What would a metal + oxygen form?

Answer 1

A metal oxide

Etc. 2Mg + O2 –> 2MgO

Question 2

How does the reactivity series react with oxygen?

Answer 2

High reactivity metals in the reactivity series react vigorously with oxygen in room temperature.

Medium - low reactivity metals in the reactivity series reacts very slowly or when heated reacts fast

Question 3

What is the one metal that does not react with oxygen in the reactivity series?

Answer 3

Gold

Question 4

What would a metal + water form?

Answer 4

Metal + Water —-> metal hydroxide + hydrogen

Etc. 2Na + 2H2O —-> 2NaOH + H2

Question 5

What are the observations when reacting a metal with water?

Answer 5

They react with water.

Producing bubbles

Lots of heat

Potassium creates Lilac flame

Question 6

What does metals + acid form?

Answer 6

Metal + Acid —> Metal salt + Hydrogen

Etc. Zinc + Hydrochloric acid —-> Zinc chloride + Hydrogen

Question 7

What are the observations of reacting a metal with a acid?

Answer 7

Metal dissolves

Bubble / fizzing

Question 8

What is a displacement reaction?

Answer 8

A more reactive metal can displace a less reactive metal from a compound.

Question 9

What is oxidation?

Answer 9

Oxidation is when a substance loses electrons;