Matter & Energy

Alex Sands

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

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

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

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

Bibliography

•Owl book•Blue book•http://

www.mansfieldct.org/schools/mms/staff/hand/convcondrad.htm