AQA GCSE Chemistry - Quantitative Chemistry Already Graded A+
1. What is Avogadro's constant?
Answer: Avogadro's constant is the number of atoms, molecules, or ions in a mole of any substance,
which is equal to 6.02 × 10^23 per mole.
2. How is concentration defined?
Answer: Concentration...
AQA GCSE Chemistry - Quantitative Chemistry Already Graded A+
1. What is Avogadro's constant?
Answer: Avogadro's constant is the number of atoms, molecules, or ions in a mole of any substance,
which is equal to 6.02 × 10^23 per mole.
2. How is concentration defined?
Answer: Concentration is the amount of a substance dissolved in a given volume of liquid.
3. What is the limiting reactant in a chemical reaction?
Answer: The limiting reactant is the reactant that is consumed first and stops the reaction from
proceeding further.
4. What is a mole?
Answer: A mole is the amount of substance in the relative atomic or formula mass of a substance in
grams.
5. What is the relative atomic mass of an element?
Answer: The relative atomic mass of an element is the average mass of its atoms compared to carbon-
12, which has a mass of exactly 12 units.
6. What is the relative formula mass of a substance?
Answer: The relative formula mass of a substance is the sum of the relative atomic masses of its
elements, added up in the ratio shown in its chemical formula.
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