P.E.N
Atoms
Elements
Periodic table
Reactions
100
proton,neutrons,electrons
what is P.E.N
100
protons,electrons,neutrons
What are the parts of a atom
100
19
What is the atomic number for potassium
100
period
The horizontal rows are called
100
absorbs enegry
What does endothermic do
200
P 2,E 2, N2
What is p.e.n for Helium
200
Mass and Atomic
What do you minus to get the neutrons
200
196.97
What is the mass number for gold
200
right side
What Side is the noble gases on
200
two or more substance combined to form a new substance
What does composition mean
300
P 10, E 10, N 10
What is P.E.N for neon
300
8
What is the atomic number for Oxygen
300
Period7
What Period is neptunium part of
300
One substance that is broke down to make more substance
What does Decomposition mean
400
color change,temp. change,and bubbling
What are three signs of a chemical reaction
M
e
n
u