CAIE IGCSE Chemistry 1.1 Solids Liquids and Gases Topic Practice

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Question 1

[Maximum number: 1]

A compound, X , has a melting point of 71∘C71^{\circ} \mathrm{C} and a boiling point of 375∘C375^{\circ} \mathrm{C}.
Which statement about X is correct?

A

It is a liquid at 52∘C52^{\circ} \mathrm{C} and a gas at 175∘C175^{\circ} \mathrm{C}.

B

It is a liquid at 69∘C69^{\circ} \mathrm{C} and a gas at 380∘C380^{\circ} \mathrm{C}.

C

It is a liquid at 75∘C75^{\circ} \mathrm{C} and a gas at 350∘C350^{\circ} \mathrm{C}.

D

It is a liquid at 80∘C80^{\circ} \mathrm{C} and a gas at 400∘C400^{\circ} \mathrm{C}.

Question 2

[Maximum number: 1]

In which state does 1dm31 \mathrm{dm}^{3} of methane contain the most particles?

A

gas at 100∘C100^{\circ} \mathrm{C}

B

gas at room temperature

C

liquid

D

solid

Question 3

[Maximum number: 1]

A mixture of ice and water is left to stand and the ice melts.

Which row describes what happens as the ice is melting?

temperature of
mixture

energy change

increases

average kinetic energy of particles decreases

increases

energy is used to overcome attractive forces

stays the same

average kinetic energy of particles decreases

stays the same

energy is used to overcome attractive forces

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