CAIE IGCSE Chemistry 1.1 Solids Liquids and Gases Topic Practice

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Covered syllabus points

1.1.1—Distinguishing properties of solids1.1.2—Structures of solids, liquids and1.1.3—Changes of state in terms of melting1.1.4—Effects of temperature and pressure on1.1.5—Changes of state using kinetic1.1.6—Effects of temperature and pressure on

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: 2]

This question is about the elements sodium and fluorine and the compound sodium fluoride.

Some properties of sodium, fluorine and sodium fluoride are shown in Table 3.1.

Table 3.1

Table 3.1

Deduce the physical state of fluorine at −200∘C-200^{\circ} \mathrm{C}. Use the data in Table 3.1 to explain your answer.
physical state
explanation

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