AQA (9-1) Topic 3

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GCSE Chemistry (AQA) Quiz on AQA (9-1) Topic 3, created by https:// revisechemistry.uk on 01/29/2018.

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https:// revisechemistry.uk
Created by https:// revisechemistry.uk over 1 year ago
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Question 1

Question
Calculate the formula mass of NaNO₃ (RAM Na=23, N=14, O=16)
Answer
  • 53
  • 113
  • 85
  • 159

Question 2

Question
James burns 0.7 g of magnesium in air. What will be the most likely mass after heating?
Answer
  • 0.7 g
  • 0.64 g
  • 0.76 g
  • 0.0 g

Question 3

Question
HCl is added to Mg in a flask. After 70 seconds all the hydrogen had been released, and there was no more Mg left. Which chemical was the limiting reagent?
Answer
  • HCl
  • Mg
  • Hydrogen
  • Magnesium chloride

Question 4

Question
Calculate the relative formula mass of calcium hydroxide (RAM Ca=40, O=16, H=1): [blank_start]74[blank_end]
Answer
  • 74

Question 5

Question
0.020 moles of calcium nitrate was dissolved in 160 ml of water. Calculate the concentration: [blank_start]0.125[blank_end] mol/dm3
Answer
  • 0.125

Question 6

Question
This equation is balanced
Answer
  • True
  • False

Question 7

Question
Balance the following equation (use the numbers 1, 2, or 3 to fill the blanks) [blank_start]1[blank_end]N2 + [blank_start]3[blank_end]H2 --> [blank_start]2[blank_end]NH3
Answer
  • 1
  • 3
  • 2

Question 8

Question
An empirical formula is the [blank_start]simplest[blank_end] whole number ratio of [blank_start]atoms[blank_end] in a substance.
Answer
  • simplest
  • atoms

Question 9

Question
The resolution of a measuring instrument is the smallest change in a quantity that gives a change in the reading that can be seen.
Answer
  • True
  • False

Question 10

Question
The law of conservation of mass states that [blank_start]no[blank_end] atoms are lost or made during a chemical reaction so the mass of the products [blank_start]equals[blank_end] the mass of the reactants.
Answer
  • no
  • equals