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periodic table
elements
atoms
atomic numbers
elements
100
what is another name for the rows on a periodic table? 
what are periods.
100
what is the symbol for hydrogen
what is H


100
what is an atom with a positive charge 
proton
100
what is the atomic number of hydrogen
1
100

what is the atomic number of oxygen 

8
200
what are two other names for the columns in a periodic table?
what are groups and families 
200
what is the symbol of helium 
what is He
200
what is an atom that has no charge 
neutron
200
what is the atomic number of helium 
2
200

what are the characteristics of non metals 

dull, brittle, non conductors

300
how many rows are on a periodic table?
what is 18 
300
what is the symbol for oxygen
what is O
300
a atom the has a negative charge 
electron 
300
what is the atomic number of boron 
5
300

what are the characteristics of metals 

shiny, malleable, ductile 

400
how many columns are on the periodic table?
what is 7
400
what is on the right side of the stair step 
non metals
400
how many parts are in a atom
three
400
what is the atomic number of carbon 
6
400
how do you find the charge 
protons + electrons 
500
what is the line that divides the periodic table 
what is stair step 
500
what is on the left side of the stair step 
metals 
500
how many elements are on the periodic table 
118
500
what is the atomic number of nitrogen
7
500

how do you find the mass

protons + nuetrons