Some materials can exist in different forms: solid, liquid, and gas. This can change based on temperature and pressure. Let’s take a closer look:

1. How Temperature Affects Matter:

   • When you heat a solid, its tiny particles get more energy and start to move around. This causes the solid to melt and turn into a liquid.
   • For example, ice (solid) melts and becomes water (liquid).
   • If you keep heating the water, it turns into steam (gas) as the particles gain even more energy.

2. How Pressure Changes Things:

   • Pressure can also change the state of a substance.
   • For instance, if you increase the pressure on a gas, it can turn back into a liquid. This happens when water vapor forms droplets.

3. Some Examples:

   • Water can change from solid (ice) to liquid (water) to gas (steam).
   • Carbon dioxide can change from solid (like dry ice) to gas (carbon dioxide gas) when the pressure goes down.

Understanding these changes helps us see how different materials behave in our everyday lives!