Reactivity

Multiple Choice

Which is the correct word equation for the reaction of sodium with water?

• Sodium + water --- Sodium hydroxide + hydrogen

• Sodium + water --- Sodium oxide + hydrogen

• Sodium + water --- Sodium oxide

• Sodium + water --- Sodium hydroxide

Multiple Choice

Which is the correct balanced chemical equation for the reaction of magnesium with steam?

• Mg (s) + H2O (g) ---- MgO (aq) + H2 (g)

• Mg (s) + H2O (l) ---- MgO (aq) + H2 (g)

• Mg (s) + H2O (g) ---- Mg(OH)2 (aq) + H2 (g)

• Mg (s) + H2O (l) ---- Mg(OH)2 (aq) + H2 (g)

Multiple Choice

Which is the correct chemical equation for the reaction of zinc with hydrochloric acid?

• Zn + HCl --- ZnCl2 + H2

• Zn + HCl --- ZnCl + H2

• Zn + HCl --- ZnCl + H

• Zn + HCl --- ZnCl2 + H

Multiple Choice

Four different metals are added with hydrochloric acid. According to the observations (check picture), the most reactive metal is

• Metal A

• Metal B

• Metal C

• Metal D

Multiple Choice

Four different metals are added with hydrochloric acid. According to the observations (check picture), the second most reactive metal is

• Metal A

• Metal B

• Metal C

• Metal D

Multiple Choice

Four different metals are added with hydrochloric acid. According to the observations (check picture), the third most reactive metal is

• Metal A

• Metal B

• Metal C

• Metal D

Multiple Choice

Four different metals are added with hydrochloric acid. According to the observations (check picture), the least reactive metal is

• Metal A

• Metal B

• Metal C

• Metal D

Multiple Choice

The following observations are found with 4 metals

1. Reacts vigorously with steam

2. Reacts vigorously with cold water

3. No reaction

4. Reacts slowly with cold water and steam

Select the metal that fits the first observation

• Copper

• Magnesium

• Iron

• Potassium

Multiple Choice

The following observations are found with 4 metals

1. Reacts vigorously with steam

2. Reacts vigorously with cold water

3. No reaction

4. Reacts slowly with cold water and steam

Select the metal that fits the second observation

• Copper

• Magnesium

• Iron

• Potassium

Multiple Choice

The following observations are found with 4 metals

1. Reacts vigorously with steam

2. Reacts vigorously with cold water

3. No reaction

4. Reacts slowly with cold water and steam

Select the metal that fits the third observation

• Copper

• Magnesium

• Iron

• Potassium

Multiple Choice

The following observations are found with 4 metals

1. Reacts vigorously with steam

2. Reacts vigorously with cold water

3. No reaction

4. Reacts slowly with cold water and steam

Select the metal that fits the third observation

• Copper

• Magnesium

• Iron

• Potassium

Multiple Choice

Why aluminium appears unreactive?

• It is an unreactive metal

• It reacts with oxygen to form an aluminium oxide layer

• It only reacts with some elements