U1 - Matter, Chemical Trends, Bonding

Question 1

•Orbitals

Answer 1

• 1st Orbital: 2e- max
• 2nd Orbital: 8e- max
• 3rd Orbital: 8e- max

Question 2

•Valence Electrons

Answer 2

•e- found in the outermost orbital

Question 3

•Groups (Column)

Answer 3

• Group 1 - Alkali Metal
• Group 2 - Alkaline Earth Metal
• Group 17 - Halogens
• Group 18 - Noble or Inert Gases

Question 4

•Periods (Rows)

Answer 4

•Valence e- = Last digit of group number

Question 5

•Lewis Dot Diagram

Answer 5

•Valence e- surrounding the chemical symbol

Question 6

•Ions

Answer 6

•Charged atoms that gain or lose electrons

Question 7

•Cation

Answer 7

• Positively charged

* Loses e-

Question 8

•Anion

Answer 8

• Negatively charged

* Gains e-

Question 9

•Isotope

Answer 9

• An atom that only differs in atomic mass

* n’ changes

Question 10

•Average Atomic Mass (AAM)

Answer 10

• The average mass of an element based on different isotopes and how often they occur
• Value is found on the periodic table

Question 11

•Average Atomic Mass Equation

Answer 11

(mass, isotope 1 x %, isotopic abundance 1) + (mass, isotope 2 x % isotopic abundance 2) + …

Question 12

•Isotopic Abundance

Answer 12

•Percentage of time in which a particular isotope occurs

Question 13

•Parts of an Atom

Answer 13

•Protons (p+)
-- atomic number
•Neutrons (n')
-- atomic number when neutral
•Electrons (e-)
-- atomic mass (-) atomic number