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OCR 2019 Paper 2

Last updated 5 months ago

15 questions

1 point

1

Question 1

1.

Sodium is in Period 2 of the Periodic Table.

Sodium is in Period 3 of the Periodic Table.

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1

Question 2

2.

Simple molecules have weak covalent bonds between atoms.

Simple molecules have weak intermolecular forces between atoms.

Simple molecules have weak ionic bonds between the molecules.

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1

Question 3

3.

In order of decreasing atomic mass and similar physical properties.

In order of increasing atomic number and similar physical properties.

In order of decreasing atomic number and similar chemical properties.

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1

Question 4

4.

R_f = \frac{ \text{distance travelled by solvent} }{ \text{distance travelled by substance} }

R_f = \frac{ \text{distance travelled by substance} }{ \text{distance travelled by solvent} }

R_f = \frac{ \text{distance travelled by stationary phase} }{ \text{distance travelled by mobile phase} }

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Question 5

5.

Diamond, graphite, graphene.

Diamond, granite, graphite.

Fullerene, graphene, ethene.

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Question 6

6.

Copper

Copper oxide

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Question 7

7.

3.1 \times 10^{-1}

3.1 \times 10^{-2}

3.1 \times 10^{-3}

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Question 8

8.

2

2, 6

2, 8, 6

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Question 9

9.

Aqueous

Gas

Liquid

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Question 10

10.

1.204 \times 10^{24}

1.505 \times 10^{23}

3.010 \times 10^{23}

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Question 11

11.

2.8 g

4.4 g

14.4 g

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Question 12

12.

Absorption phase

Liquid phase

Mobile phase

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1

Question 13

13.

0.18

0.25

4.0

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1

Question 14

14.

2Br^- \rightarrow Br_2 + 2e^-

Br^- \rightarrow Br + e^-

Br_2 + 2e^- \rightarrow 2Br^-

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1

Question 15

15.

Carbon dioxide

Magnesium oxide

Sulfur dioxide