11 mark
Descriptions of two different states of matter are shown below.
To which state of matter do each of the descriptions fit?
X: the molecules are very close together, in fixed positions. They vibrate around these fixed positions. Y: the molecules move rapidly and randomly in straight lines until they collide with something. The molecules are spaced apart very far. |
| State X | State Y |
A | solid | liquid |
B | solid | gas |
C | liquid | gas |
D | gas | liquid |
Choose your answer