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Unit 2 Chemistry

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Reactivity series of metals

Question 1 of 12

1

The most reactive metals belong to group 2.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 12

1

What are the observations of potassium?

Select one or more of the following:

  • Effervescence

  • Metal floats and moves on surface of water

  • Ignites with lilac flame

  • Melts into silvery ball

  • Turns red

  • Turns colourless

  • Produces oxygen

Explanation

Question 3 of 12

1

What is the word equation for Sodium?

Select one of the following:

  • Sodium + water --> Sodium Oxide + Hydrogen

  • Sodium + water --> Sodium Oxide + Carbon Dioxide

  • Sodium + water --> Sodium Hydroxide + Hydrogen

Explanation

Question 4 of 12

1

Name the gas produced when group 1 metals react with water.

Select one of the following:

  • Hydrogen

  • Carbon Dioxide

  • Oxygen

Explanation

Question 5 of 12

1

The reactivity of group 1 metals decreases going down the group.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 12

1

Metal + steam --> Metal ? + ?

Select one of the following:

  • Hydroxide + Hydrogen

  • Oxide + Hydrogen

  • Oxide + Carbon dioxide + Hydrogen

Explanation

Question 7 of 12

1

Metal + Oxygen --> Metal Oxide

Select one of the following:

  • True
  • False

Explanation

Question 8 of 12

1

In a displacement reaction, a ? reactive metal will displace a ? reactive metal from a solution of its salt.

Select one of the following:

  • more, less

  • less, more

  • -, equally reactive

Explanation

Question 9 of 12

1

What are the observations of Zinc + Copper (II) Sulfate --> Zinc Sulfate + Copper?

Select one or more of the following:

  • Blue solution turns colourless

  • Colourless solution turns blue

  • Red-brown solid forms

  • Bluish solid forms

  • Silver zinc metal disappears

  • Copper disappears

Explanation

Question 10 of 12

1

Which of these metals would be extracted by electrolysis?

Select one or more of the following:

  • Potassium

  • Sodium

  • Magnesium

  • Silver

  • Zinc

  • Copper

  • Iron

  • Aluminium

Explanation

Question 11 of 12

1

Apart from haematite, what other materials are used in the extraction of Iron in the blast surface?

Select one or more of the following:

  • Limestone

  • Coke

  • Hot air

  • Water

  • Hydrogen

  • Nitrogen

Explanation

Question 12 of 12

1

Apart from haematite, what other materials are used in the extraction of Iron in the blast surface?

Select one or more of the following:

  • Limestone

  • Coke

  • Hot air

  • Water

  • Hydrogen

  • Nitrogen

Explanation

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