Elastic vs. Inelastic

Elastic collision - objects bounce off each other after colliding
Ex: kicking a soccer ball is an elastic collision because the ball just bounces off
Inelastic collision - objects stick together after colliding
Ex: When two cars hit each other in a crash they stick together

Phase change

A phase change i saw was when i make coffee and i boil the water and it starts to create bubbles and if i leave the water boiling to much all the water will be gone.The reason the water bubble is because it is evaporating and evaporation is when a liquid changes to a solid.If i let the water boil to long all the water will change into a gas. This is a phase change i saw out of class.

Too Hot/Too Cold

Metal is conductor and heat transfers faster through it so that's why metal heats up fast.

Rubber is an insulator and it is harder for heat to travel through an insulator that why it heats up slow.

Plastic is also and insulator and that why it doesn't heat up fast, it take more time for the heat to transfer.