Balanced equations and masses (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens to atoms during a chemical reaction?
What happens to atoms during a chemical reaction?
They are rearranged
According to the law of conservation of mass, what equals the total mass of products?
According to the law of conservation of mass, what equals the total mass of products?
Total mass of reactants
In , how many atoms are on each side of the equation?
In , how many atoms are on each side of the equation?
4 atoms on each side
What is the relative atomic mass of chlorine (Cl)?
What is the relative atomic mass of chlorine (Cl)?
35.5
What is the relative formula mass of ? (H=1, O=16)
What is the relative formula mass of ? (H=1, O=16)
18
For , what is the total mass of reactants? (H=1, Cl=35.5)
For , what is the total mass of reactants? (H=1, Cl=35.5)
73
Why might mass appear to change during a reaction?
Why might mass appear to change during a reaction?
Gases enter or leave the system
What happens to a container when gas escapes from a reaction?
What happens to a container when gas escapes from a reaction?
It becomes lighter
Is mass truly lost when escapes from a reaction container?
Is mass truly lost when escapes from a reaction container?
No, the gas has just left
In , which gas escapes?
In , which gas escapes?
What is the relative formula mass of ? (C=12, O=16)
What is the relative formula mass of ? (C=12, O=16)
44
If 100g produces 44g , how much does 50g produce?
If 100g produces 44g , how much does 50g produce?
22g