Chemistry Flashcards
1
Q
element
A
made of only 1 atom
2
Q
compound
A
made of 2 or more atoms bound together
3
Q
mixture
A
made of 2 or more substances not chemically bonded
can be changed back to original forms
4
Q
top # in element box
A
atomic number
5
Q
bottom # in element box
A
atomic mass
always round
6
Q
letter symbol in element box
A
element
7
Q
protons
A
- atomic number
- positively charged
- center of nucleus
8
Q
electrons
A
- atomic number
- negatively charged
- spin far from nucleus
9
Q
neutrons
A
- mass - atomic #
- neutrally charged
- center of nucleus
10
Q
Energy Level; Shell Letter; Electron Capacity
A
1; K; 2 2; L; 8 3; M; 18 4; N; 32 5; O; 50 6; P; 72
11
Q
atom
A
smellest piece of matter
