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The table gives the melting and boiling points of four pure substances, W, X, Y and Z.
Melting point in °C
Boiling point in °C
w
-7
60
Х
660
2500
Y
180
1330
Z
115
445
Use data from the table to answer the questions.
(a) (0) Which substance is a gas at 100°C?
X AW
B X
D CY
DZ
(ii) Which substance is a liquid for the largest range of temperature?
D A W
B X
CY
DZ
liquid at 1000 °C and a gas at 2000°C?
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The table gives the melting and boiling points of four pure substances, W, X, Y and Z.
Melti...
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