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1. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)

4 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + Cl₂(g)

4 HCl(aq) + 2 MnO₂(s) → 2 MnCl₂(aq) + 2H₂O(l) + Cl₂(g)

6 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + 2 Cl₂(g)

2 HCl(aq) + MnO₂(s) → MnCl₂(aq) + H₂O(l) + Cl₂(g)

Question 1 of 10

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2. What is the name of this molecule?

methane

ethane

ethanol

ethene

Question 2 of 10

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3. Predict what colour and state is fluorine at room temperature

green solid

yellow gas

yellow solid

green liquid

Question 3 of 10

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4. Complete the following expression: amount (in moles) =

amount (in moles) x Mᵣ

mass / Mᵣ

Aᵣ / Mᵣ

Mᵣ / mass

Question 4 of 10

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5. What is needed to complete this diagram to show the ionic bonding in sodium chloride, NaCl ?

1) seven electrons around the sodium 2) one electon around the chloride 3) A charge of +1 on the sodium and -1 on the chloride

1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +1 on the sodium and -1 on the chloride

1) seven electrons around the chloride 2) one electon around the sodium 3) A charge of +1 on the sodium and -1 on the chloride

1) eight electrons around the chloride (seven dots and one cross) 2) A charge of -1 on the sodium and +1 on the chloride

Question 5 of 10

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6. What does this symbol represent?

Rate of forward reaction equals rate of backwards reaction

Reversible reaction

Yield of reaction is the same both ways

Dynamic equilibrium

Question 6 of 10

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7. A student has been asked to draw all the alkene isomers of C₄H₈ and draws the following. Which of the following statements about the student's diagram is correct?

The student is wrong because the molecules labelled 1 and 2 are the same molecule, so not different isomers

The displayed formulae are correct, and the names are: 1) but-1-ene 2) but-2-ene and 3) methylpropene. However, the student has forgotten to also draw cyclobutane.

The displayed formulae are correct, and the names are: 1) but-1-ene 2) but-2-ene and 3) methylpropene.

The displayed formulae are correct, and the names are: 1) but-1-ene 2) but-2-ene and 3) methylbutene.

Question 7 of 10

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8. What is the formula for lithium carbonate?

Li₃(CO₃)₂

Li(CO₃)₂

Li₂CO₃

Li₂(CO₃)₃

Question 8 of 10

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9. acid + metal →

acid + metal → salt + water

acid + metal → salt + water + carbon dioxide

acid + metal → salt + hydrogen

acid + metal → salt + hydrogen + oxygen

Question 9 of 10

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10. What 2 things are added to a solution to test for chloride ions? What is observed if they are present?

Add dilute hydrochloric acid and silver nitrate. A white precipitate of silver chloride is formed

Add dilute nitric acid and silver nitrate. A white precipitate of silver chloride is formed.

Add dilute nitric acid and barium chloride. A white precipitate of silver chloride is formed

Add dilute hydrochloric acid and barium chloride. A white precipitate of silver chloride is formed

Question 10 of 10

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Hydr0Gen2022-03-09T21:22:06+00:00Categories: Uncategorized|Tags: Quiz|

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Hydr0Gen2019-11-11T21:55:53+00:00Categories: Uncategorized|Tags: Chemistry, GCSE, Quiz, Topic: Moles|

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