1. Matter & Energy Alex Sands

2. Atoms Basic building blocks of all matter Microscopic particles Makes up everything, all matter Chemical bonds hold atoms together in predictable ways to form molecules Electrons have a negative charge Protons have a positive charge Neutrals are neutral, or have no charge Protons & neutrons in the nucleus, electrons orbit around atom

3. Molecules Molecules are formed when atoms are organized by chemical bonding The number of electrons floating around a particular atom determines its number of chemical bond However fast the molecules are moving dertermines its state of matter – Solid – Liquid – Gas

4. Energy Comes in a variety of forms – Heat, light, electrical, solar, nuclear, mechanical, and chemical energy More energy causes molecules to move faster, thus changing its form Solid –> liquid –> gas Endothermic reactions are chemical reactions that take in heat

5. Energy Transfer Convection – Heat rising, cooling then falling Conduction – Heat transferred through direct contact of matter from particle to particle Radiation – Electromagnetic waves transporting energy through space