Definitions...

Melting - A phase change from a solid to a liquid started by heat

Dissolve - a uniform mixture of 2 substances at the particle level

Steps to Find Energy Tranfser

Remember all of the steps:
Steps to Figure out Energy Transfer

Step #1 - Tfinal= Thot + Tcold/2

Step #2- Change in Temperature: Tfinal - Tstarting -- You need to do this step twice! Once for the hot water and once for the cold water.

Step #3- Finding Calories: mass x change in temp - you may need to do this step twice--- Label is calories

Keep in mind - step one is linked to step 2 & step 2 is linked to step 3

3 Big Ideas about Energy Transfer

1. Kinetic Energy = Heat
2. Energy transfer occurs at the collision of the two particles which is called conduction
3. Energy always transfers from the higher energy particle (hot) to the lower energy particle (cold).

More info about energy transfer---
Here are the BIG ideas about energy transfer:

• All particles have kinetic energy. The faster a particle moves the more kinetic energy it has.
• What gives particles kinetic energy? Heat! The faster it moves the hotter is is.
• Energy moves from particle to particle. This happens when they hit or collide.
• Energy always moves from higher energy particle to the lower energy particle.
  • So think of it as fast to slow or hot to cold.
• When particles hit and transfer energy, that hit is called conduction.

Rules for Elements

Main Elements in Objects
1. living objects- carbon, hydrogen, oxygen
2. plastics & once living- carbon, hydrogen
3. metals - iron & oxygen
4. rock-like objects- silicon & oxygen
5. Air - oxygen, nitrogen, and argon