OCR 2019 Paper 2

Last updated 10 months ago

15 questions

1

Sodium is in Period 2 of the Periodic Table.

Sodium is in Period 3 of the Periodic Table.

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.

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.

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} }

Diamond, graphite, graphene.

Diamond, granite, graphite.

Fullerene, graphene, ethene.

Copper

Copper oxide

3.1 \times 10^{-1}

3.1 \times 10^{-2}

3.1 \times 10^{-3}

2

2, 6

2, 8, 6

Aqueous

Gas

Liquid

1.204 \times 10^{24}

1.505 \times 10^{23}

3.010 \times 10^{23}

2.8 g

4.4 g

14.4 g

Absorption phase

Liquid phase

Mobile phase

0.18

0.25

4.0

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

Br^- \rightarrow Br + e^-

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

Carbon dioxide

Magnesium oxide

Sulfur dioxide

Sodium is in Period 2 of the Periodic Table.

Sodium is in Period 3 of the Periodic Table.

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.

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.

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} }

Diamond, graphite, graphene.

Diamond, granite, graphite.

Fullerene, graphene, ethene.

Copper

Copper oxide

3.1 \times 10^{-1}

3.1 \times 10^{-2}

3.1 \times 10^{-3}

2

2, 6

2, 8, 6

Aqueous

Gas

Liquid

1.204 \times 10^{24}

1.505 \times 10^{23}

3.010 \times 10^{23}

2.8 g

4.4 g

14.4 g

Absorption phase

Liquid phase

Mobile phase

0.18

0.25

4.0

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

Br^- \rightarrow Br + e^-

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

Carbon dioxide

Magnesium oxide

Sulfur dioxide