This document discusses the differences between solids, liquids, and gases at the particle level and provides information about melting. It notes that in solids, particles are fixed in place and can only vibrate, while in liquids particles can move over each other but remain close together, and in gases particles can move anywhere and are far apart. It then explains that melting occurs when a solid is heated and turns into a liquid, with different materials having different melting points, or temperatures at which they melt.

1. Melting Complete the sheet on particles

2. In a solid Particles are in a fixed place Particles can only vibrate about their place Particles are very close together

3. In a liquid Particles are not in a fixed place Particles can move over one another in the bottom of the container Particles are close together

4. In a gas Particles can move anywhere in their container Particles are moving very fast Particles are far apart

5. Must know that some materials melt Should know what melting is Could know some of the differences between the way different materials melt

6. We have to heat things to get them to melt Different chemicals melt at different temperatures. (They have different melting points) Melting is when a solid turns into a liquid What have we discovered?