Q.1.
Which of these has the least densely-packed particles?
Q.2.
When a liquid cools enough it becomes a solid. What do we call this process?
Q.3.
What is the freezing point of water?
Q.4.
Which of these is true of solids?
Q.5.
Which has the most densely-packed particles?
Q.6.
When a solid is heated, it changes into a liquid. What do we call this process?
Q.7.
When you fill a jug with sugar, it appears to have the same shape as the jug. You can also tip sugar from one container to another. Is sugar a solid, a liquid or a gas?
Q.8.
What is the boiling point of water?
Q.9.
Which of these is true of gasses?
Q.10.
Which of these is true of liquids?