Friday, 18 July 2025
Keywords: acid, metal, reactants, products
Acids revision
Acid + alkali  ______ + water
What is a base?
Acid + metal 
Acid + metal carbonate 
How do we test for hydrogen gas?
Specification Points: 4.4.2.1
(Paper 1)
How do we test for CO2?
Friday, 18 July 2025
Keywords: acid, metal, reactants, products
Acids revision
Specification Points: 4.4.2.1
(Paper 1)
Friday, 18 July 2025
Keywords: acid, metal, reactants, products
Brain dump
Test for hydrogen gas
Acid + metal 
Acid + alkali 
hydrochloric acid + magnesium hydroxide 
Sulphuric acid + sodium 
Universal indicator
pH scale
Acids
Nitic acid + iron carbonate 
How do we name salts?
Acid + metal carbonate 
Test for CO2
Specification Points: 4.4.2.1
(Paper 1)
Testing for gases
What is the test for:
Hydrogen:
Examples:
Acid:
Alkali:
Base:
The ions present in:
Acids are…..
Neutralization:
A substance with a pH
of:
<7 is a…..
=7 is a…..
>7 is a………
Alkalis and bases:
Similarities:
Differences:
Alkalis are…
(explain what neutralization is. Include: an equation, what
happens to the ions, what happens to pH)
Definitions:
Acid:
Alkali:
Base:
Oxygen
The pH scale
is…
Carbon dioxide
Acids and Alkalis
Naming salts: e.g’s…. (including a balanced symbol
equation for each e.g.)
Magnesium + Hydrochloric
acid
Chlorine
The rule for naming salts...
Calcium + Sulphuric
Carbonate
acid
Sodium
+ Nitric
Hydroxide
acid
Reactions of acids:
Making salts:
Acid
Hydrochloric
acid
Salt formed
Acid + Metal
Acid + Base
Nitric acid
Sulphuric acid
Acid + Metal
Carbonate
Testing for gases
What is the test for:
Hydrogen:
Examples:
Acid:
Alkali:
Base:
The ions present in:
Acids are…..
Neutralization:
A substance with a pH
of:
<7 is a…..
=7 is a…..
>7 is a………
Alkalis and bases:
Similarities:
Differences:
Alkalis are…
(explain what neutralization is. Include: an equation, what
happens to the ions, what happens to pH)
Definitions:
Acid:
Alkali:
Base:
Oxygen
The pH scale
is…
Carbon dioxide
Acids and Alkalis
Naming salts: e.g’s…. (including a balanced symbol
equation for each e.g.)
Magnesium + Hydrochloric
acid
Chlorine
The rule for naming salts...
Calcium + Sulphuric
Carbonate
acid
Sodium
+ Nitric
Hydroxide
acid
Magnesium
chloride +
hydrogen
Calcium sulphate
+ carbon dioxide
+ water
Sodium nitrate +
water
Reactions of acids:
Making salts:
Acid
Hydrochloric
acid
Salt formed
Acid + Metal
Acid + Base
Nitric acid
Sulphuric acid
Acid + Metal
Carbonate