Chemical Reactions

Question 1

What is a chemical reaction

Answer 1

Non-reversible reaction

Question 2

What is a physical reaction

Answer 2

A reversible reaction

Question 3

What is MASH

Answer 3

Metal + Acid —> Salt + Hydrogen
Iron + sulphuric acid –> iron sulphate + hydrogen
Fe + H2SO4 —> FeSO4 + H2 ????

Question 4

What are the two types of reaction?

Answer 4

Chemical and physical

Question 5

What is a base?

Answer 5

When a substance has a pH higher than 7 and has a high concentration of hydroxyl ions e.g. metal oxides and carbonates

Question 6

What does neutralise mean

Answer 6

To be made neutral by removing any acidic or alkaline nature

Question 7

What is CASHOCO

Answer 7

Carbonate + Acid —> Salt + Water + Carbon Dioxide
Magnesium carbonate + hydrochloric acid –> magnesium chloride + water + carbon dioxide
MgCO3 + 2HCL –> mgCl2 + H2O + CO2

Question 8

What is the test for MASH?

Answer 8

Squeaky pop test, bubbles

Question 9

What is the test for CASHOCO

Answer 9

Cloudy water test

Question 10

What does it mean for an acid when basho happens

Answer 10

It has been neutralised

Question 11

How is a salt formed (name)

Answer 11

Metal + suffix