Chemical Formulas
Miscellaneous
Periodic Table
Atomic Structure
100
How many atoms of Oxygen are in the compound, 
?
3
100
How many valence electrons does an element in group 2 have? 
2
All elements in the same group have the same amount of valence electrons.
100
What is a row on a Periodic Table called?
Period
100
What charge does a proton have?
Positive
200
How many atoms of Carbon are in the compound, 
?
1
200
How many valence electrons does an element in group 14 have? 
4
The valence electron pattern skips the middle of the periodic table (transition metals).
200
What is a column on a Periodic Table called?
Family
200
What charge does an electron have?
Negative
300
How many total atoms are in the compound, 
?
?5
300
In a the following chemical equation, which compounds are the reactants?
reactants REACT to PRODUCE products.
reactants ---> products
300
What does the number about the column tell you?
Number of Valence Electrons
300
What charge does a neutron have?
Neutral
400
How many elements are in the compound, 
?
3
(calcium- Ca, carbon- C, oxygen- O)
400
According to the Law of Conservation of Mass, the total mass of the products of this reaction should be what?
15 g + 30 g ----> __?__ g
45 g
Matter is not created or destroyed in a chemical reaction, just transformed.
mass of reactants = mass of products
400
What does the number next to the row tell you?
Energy Levels
400
Which particle tells you the identity of an atom?
Proton
500
How many atoms of oxygen are present in the formula, 
?
?9
(3 separate molecules, 3 x 3 = 9)
500
Elements in the same ___________ share the same chemical properties.
Group
Because elements in the same group have the same # of valence electrons, they are chemically similar.
500
Which column are the Noble Gases located?
18
500
What is the center of an atom called?
Nucleus