Matter and Energy

By: Caitlyn ShieldsLexi Myre

Tyler Searle

• Atoms consist of protons, neutrons, and electrons.

• The protons and neutrons are located in the nucleus

• The electrons are located outside the nucleus.

ATOMS

http://www.wjcc.k12.va.us/ROBB/Atom%20Animation%20Resources.htm

ATOMS• Protons have a positive charge• Electrons have a negative charge• Neutrons have a no charge or are neutral

http://scienceaid.co.uk/chemistry/fundamental/atom.html

• Electron Cloud is the area around the nucleus where the circulating negatively charged electrons are.

• The fuzz or blur is caused by the movements of the electrons.

Electron Cloud

http://letstalkaboutscience.wordpress.com/2012/02/16/the-electron-cloud/

• The protons determine the identity of an element

• The number of protons equals the atomic number

• The total number of protons and neutrons equals the the atomic mass

• The number of protons is equal to the number of electrons

Protons

• Valence electrons are the number of electrons on the outermost ring of an atom

• The valence electrons in a atom determines its compatibility with other elements and substances in the periodic table.

http://www.tutorvista.com/content/science/science-i/structure-atom/valence-shell-electron.php

Valence Electrons

http://youtu.be/SvPelcRygAs

http://youtu.be/aLF9iKRGqKc

Bohr Diagram Videos

Noble gasesHalogens

Transition Metals

Alkaline Earth Metals

Alkali Metals

• A chemical formula is the identity of the substance.

• If anything is changed in the formula, it becomes a completely different chemical.

• When a Chemical Reaction has taken place, you cannot put the substances back to exactly how they were.

Chemical Formula

• The Law of Conservation of Mass means that on both sides of the chemical formula, there must be the same number of substances on each side.

CHEMICAL FORMULAS (CONTINUED)

http://www.mikeblaber.org/oldwine/chm1045/notes/Stoich/Equation/Stoich01.htm

http://youtu.be/Jjc74zl26RQ

http://youtu.be/bn3Q_vLK21M

Balancing Equations

Sources"Matter & Energy." - Kids Konnect. Http://www.jikometrix.net/index.php, n.d. Web. 15 Apr.2013. Matter Is the Stuff Around You." Chem4Kids.com: Matter. N.p., n.d. Web. 15 Apr. 2013. "Electron Cloud Model." Universe Today RSS. N.p., n.d. Web. 18 Apr. 2013 "Valence Electrons." Valence Electrons. N.p., n.d. Web. 18 Apr. 2013. "Balancing Chemical Equations." About.com Chemistry. N.p., n.d. Web. 18 Apr. 2013. Jackson, Jo. "How to Do Bohr Diagrams." EHow. Demand Media, 24 May 2011. Web. 18 Apr. 2013.