4MA0 Foundation January 2016 Paper 1R Q7
7 The table shows the boiling points and the melting points of five elements.
| Boiling point (°C) | Melting point (°C) | |
|---|---|---|
| Bromine | 59 | −7 |
| Chlorine | −34 | −101 |
| Mercury | 357 | −39 |
| Nitrogen | −196 | −210 |
| Oxygen | −183 | −218 |
(a) Which of these elements has the lowest boiling point? (1)
(b) What is the difference in temperature between the boiling point of chlorine and the boiling point of oxygen? (2)
(c) What is the difference in temperature between the melting point of mercury and the boiling point of mercury? (2)
| Scheme | Marks |
|---|---|
| Nitrogen | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| or \(183 - 34\) | M1 |
| 149 | A1 |
| (2) |
Notes
A1: Accept \(-149\)
| Scheme | Marks |
|---|---|
| 357 + 39 or \(-39 - 357\) | M1 |
| 396 | A1 |
| (2) | |
| Total 5 marks |
Notes
A1: Accept \(-396\)