Isotopes (Have your P-table Ready!)
Significant Figures & Sci. Notation
Radioactivity & Decay
Percent Composition
BONUS: Periodic Table Trends (Not on Exam)
100
Two elements with different numbers of these are considered isotopes
Neutrons
100
How many significant figures are in 100.029?
6
100
Which types of radioactive decay are occurring here?
1. Beta decay
2. Alpha Decay
100
What is the percent composition of Carbon in 300 g of CO2? Round to the nearest whole percent
33%
100
What kind of elements can be generally found in the p block?
Non-metals & Metaloids
200
Determine the number of neutrons for the following isotopes
1. Potassium-39
2. Cobalt - 59
1. 20 Neutrons
2. 32 Neutrons
200
Determine the number of significant figures and the scientific notation of 1,000,280.
It has 7 sig figs and It's scientific notation is 1.00028 x 107
200
Predict the product of this reaction
Thorium 239
200
What is the percent composition of hydrogen in 900 g of H2S?
67%
200
In group 15, which element... (1) is the heaviest (not livermorium), (2) is the fewest electrons, (3) is a metalloid and (4) is post-transition metal?
(1) Polonium
(2) Oxygen
(3) Tellurium
(4) Polonium
300
Determine the mass number for the following
1. Cerium with 82 neutrons
2. Iridium with 115 neutrons
3. Polonium with 125 neutrons
1. 140
2. 192
3. 209
300
Determine the number of significant figures and the scientific notation of 0.00238 and 10,020,371.
0.00238 | 3 sig figs, 2.38 x 10-2
1,020,371 | 7 sig figs, 1.0020371 x 108
300
Infer the reactant of this reaction
Gold 204
300
What is the percent composition of Oxygen in 400 g of CH2O
25%
300
Challenge: What elements have the following electron configurations... 1s22s22p63s1 & 1s22s22p63s23p64s23d9
Sodium & Copper
400
Which has the largest mass number?
Strontium with 49 neutrons
Beryllium with 5 neutrons
Curium with 10 neutrons?
Curium!
Strontium-87
Beryllium-9
Curium - 106!
400
Determine the number of significant figures and the scientific notation of 0.3918 , 100.283, and 120,019.0
0.3918 | 4 sig figs , 3.918 x 10-4
100.283 | 6 sig figs, 1.00283 x 103
120,019.0 | 7 sig fig, 1.200190 x 105
400
Determine the reactants of each nuclear equation! Write them using their chemical symbol, mass number, and proton number.
400
Nitrogen and oxygen are both in a tank. They are combined to create N2O5. What is the percent composition of Oxygen if 700 g of N2O5 is produced?
71%
500
Write the correct isotope notation for these isotopes. Ex: 
1. Cerium with 82 neutrons
2. Iridium with 115 neutrons
3. Polonium with 125 neutrons
500
Determine the number of significant figures and the scientific notation of 1.3918 , 129.901 , 19.0, and 0.1212121
1.3918 | 5 sig figs, 1.3918 x 100
129.901 | 6 sig figs, 1.29901 x 102
19.0 | 3 sig figs, 1.9 x 101
0.1212121 | 7 sig figs, 1.212121 x 10-1
500
Predict the products of these nuclear reactions. 
Equation 1 = Thorium 230
Equation 2 = Calcium 37
500
There is 15 grams of Chemical X. It gets spilled into a vat of 55 g of Chemical Y. They create a monstrous chemical, Chemical XY. What is the percent composition of Chemical Y in the mixture?
79%