Melting and boiling points

This task is about melting and boiling points of substances.
Use this table to answer the questions below.
Substance Melting Point °C Boiling Point °C
Aluminium 660 1800
Iron 1535 2750
Nitrogen – 210 – 196
Oxygen – 218 – 183
Sodium chloride 804 1413
Water 0 100

Question 1Change answer

a)  What is the melting point of iron?  °C

Question 1Change answer

b)  At what temperature does water turn from a liquid to a gas?  °C

Question

 c)  At 680°C, is sodium chloride a solid, liquid, or gas?

    • solid

    • liquid

    • gas

Question

 d)  Which substance remains liquid over the greatest temperature range?

    • Aluminium

    • Iron

    • Nitrogen

    • Oxygen

    • Sodium chloride

    • Water

Question

 e)  Choose the substances which are liquid at 1000°C.

    • Aluminium

    • Iron

    • Nitrogen

    • Oxygen

    • Sodium chloride

    • Water

Question

 f)  If a mixture of oxygen and nitrogen was cooled, which one would freeze first?

    • Oxygen

    • Nitrogen

Question 6Change answer

g)  At what temperature does aluminium freeze?  °C

Question

h)  At room temperature:
i)  which substance(s) would be in a solid state?

    • Aluminium

    • Iron

    • Nitrogen

    • Oxygen

    • Sodium chloride

    • Water

Question

ii)  which substance(s) would be in a liquid state?

    • Aluminium

    • Iron

    • Nitrogen

    • Oxygen

    • Sodium chloride

    • Water

Question

iii)  which substance(s) would be in a gas state?

    • Aluminium

    • Iron

    • Nitrogen

    • Oxygen

    • Sodium chloride

    • Water