GCSE CHEMISTRY - EQUATIONS EXAM REVISION QUESTIONS
WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Moles - ANSWER- Moles = Mass / Ar
Volume Of A Gas (Room Temperature) - ANSWER- Volume = Number of moles x 24
Concentration - ANSWER- Concentration = Number of Moles / Volume
Percentage Yield - ANSWER- Percentage Yield = (Total Yield / Maximum Theoretical Yield)
x 100
Atom Economy - ANSWER- (RFM of desired product / Sum of RFM of all products) x 100
Number Of Neutrons - ANSWER- Number Of Neutrons = Mass Number - Atomic Number
Rate Of Reaction - ANSWER- Rate of reaction = Amount of Reactant used OR Product Formed
/ Time
Oxidation - ANSWER- Loss of electrons
Reduction - ANSWER- Gain of electrons
Acid + Metal Hydroxide - ANSWER- Acid + Metal Hydroxide -> Salt + Water
Acid + Metal Oxide - ANSWER- Acid + Metal Oxide -> Salt + Water
WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Moles - ANSWER- Moles = Mass / Ar
Volume Of A Gas (Room Temperature) - ANSWER- Volume = Number of moles x 24
Concentration - ANSWER- Concentration = Number of Moles / Volume
Percentage Yield - ANSWER- Percentage Yield = (Total Yield / Maximum Theoretical Yield)
x 100
Atom Economy - ANSWER- (RFM of desired product / Sum of RFM of all products) x 100
Number Of Neutrons - ANSWER- Number Of Neutrons = Mass Number - Atomic Number
Rate Of Reaction - ANSWER- Rate of reaction = Amount of Reactant used OR Product Formed
/ Time
Oxidation - ANSWER- Loss of electrons
Reduction - ANSWER- Gain of electrons
Acid + Metal Hydroxide - ANSWER- Acid + Metal Hydroxide -> Salt + Water
Acid + Metal Oxide - ANSWER- Acid + Metal Oxide -> Salt + Water
