Metals
Non Metals
Noble Gases
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100
The atomic number for Calcium
20
100
The symbol for silicon
Si
100
How many noble gases are there
6
100
Made up of two types of substances
mixture
100
The purpose of the periodic table is to ______ and ____ the properties of elements
-Explain and predict
200
The atomic mass of sodium
22.99
200
The element with the symbol As
Arsenic
200
Noble gases are grouped together because they don't ______ easily
react
200
A mixture that has one observable phase
homogeneous
200
The rows of the periodic table
periods
300
The number of electrons in cesium
55
300
Atomic number for oxygen
8
300
Number of electrons in Neon
10
300
A pure substance made up of two or more elements
compound
300
the columns of the periodic table
Families or groups
400
The number of protons in Lithium
3
400
Number of protons in sulfur
16
400
Number of protons in Krypton
36
400
Oil and water form this type of mixture
heterogenous
400
How many periods are there
7
500
The number of neutrons in Beryllium
9-4=5
500
Number of neutrons in Phosphorous
31-15= 16
500
Number of neutrons in Argon
40-18= 22
500
Two or more atoms of the same elements bonded together
a molecule
500
Who invented the periodic table
Mendelev
M
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