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Unit 1: Introduction
Unit 2: Atoms
Naming Chemicals
Writing Chemicals
Periodic Table
100
Convert the following: A. 422.2086, B. 0.00000673, C. 435,320,000, D. 3.28 x 10^-3
A. 4.222086 x 10^2, B. 6.73 x 10^-6, C. 4.3532 x 10^8, D. 0.00328
100
Which scientist is credited for finding the charge of an electron?
Milikan
100
P2F5
diphosphorus pentafluoride
100
Silicon dioxide
SiO2
100
Where are the alkali metals, the alkaline earth metals, the halogens, and the noble gases located in the periodic table?
Group 1A, Group 2A, Group 7A, and Group 8A.
200
Name 2 observations about your day and 2 inferences about your day.
Check w/ teacher
200
Name the three subparticles in the atom, their location, mass, and charge.
Proton – nucleus, 1 amu, +, Neutron, nucleus, 1 amu, 0, Electron – cloud surrounding nucleus, 0 amu, -
200
CaBr2
Calcium bromide
200
Potassium oxide
K20
200
Arrange the following group of elements in order of increasing ionization energy: Be, Mg, Sr
Sr, Mg, Be
300
Give two examples of chemical changes and two examples of physical changes.
Check w/ teacher
300
What particle did J.J. Thompson find?
Electrons
300
Fe2O3
Iron (III) oxide
300
Tin (II) oxide
SnO
300
Define electronegativity and describe the vertical and horizontal patterns of it.
Electronegativity is the measure of the ability of an atom to attract electrons. As you go down the group, it decreases. As you go across from left to right, it increases.
400
Describe the difference between accuracy and precision.
Accuracy: How close you are to the center (bull's eye) of a target. Precision: How close your shots are to each other (3 shots to same place on target).
400
Find the atomic mass of chlorine if Chlorine-35 has a mass of 34.969 amu and Chlorine-37 has a mass of 36.966 amu and is present 24.22% of the time.
35.453
400
K2SO4
Potassium sulfate
400
Sodium carbonate
Na2CO3
400
Explain the relationship between atomic radius and 1st ionization energy.
As the atomic radius increases, the ionization energy decreases. As the atomic radius decreases, the ionization energy increases.
500
Determine the correct number of sig figs: A. 706, B. 930, C. 0.00071400
A. 3, B. 2, C. 5
500
Fill out the table (See poster)
See Poster
500
HCl
Hydrochloric acid
500
Carbonic acid
H2CO3
500
Explain the reactivity trend for non-metals and metals.
Increases from top to bottom with metals. Increases from bottom to top with nonmetals.