2 DO NOW Get out your graphing homework A student tests the amount of carbon found in the soil of 3 different types of plants and the soil without any plants. List the:Independent variableDependent variableControl GroupHypothesis
3 DO NOW Get out your atom tutorial handout & your atom notes sheet Draw a picture with labels of an atom. Include this vocabulary:NucleusNeutronProtonElectron
4 TASKS Quiz Complete graph (follow the steps from your notes!) Complete: A look Inside the Atom online activity (see handout and website)Schwichtenberg.wikispaces.com/home
16 How is the periodic table organized? Periods: (Rows) Shows the number of energy levelsGroups: (Columns) All elements in a group have the same number of valence electrons. Elements in the same group share the same properties – do the same “things”
17 Valence electrons: the number of electrons in the outer shell of an atom
19 How do we represent atoms on paper? How to make a Bohr model:1. Draw a circle to represent the nucleus of the atom.
20 How do we represent atoms on paper? 2. Add more circles outside the nucleus to represent energy levels (electron shells).
21 How do we represent atoms on paper? 3. Add electrons (as small dots) to each energy level as allowed until you have the proper number of electrons for a neutral element. (# of electrons should be = to the number of protons).