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Flashcards in Valence Electrons Deck (20)
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1

charge of a proton

positive

2

charge of a electron

negaitve

3

opposite charges

attract

4

like charges

repel

5

In order for a compound to be polar, it must have these features

Uneven/assemtrical and a partial charge

6

How do we know things are charged

How they act next to other things that are charged

7

What does a chemical formula show

The ratio of chemicals in a compound

8

Why do elements form compounds

They are attracted to each other's electrons

9

A stable element has how many stable electrons

8

10

What 2 elements need only 2 valence electrons

H and He

11

To become stable, elements form

Compounds/bonds

12

How do elements form bonds

Stealing, losing, or sharing electrons

13

A pure substance made up of only one atom

Element

14

Two or more elements combined

Compound

15

Equal number of protons in an atom

Atomic number

16

# of protons is equal to the

# of electrons

17

Energy level 1 can hold how many electrons

2

18

Energy level 3 can hold how many ve

18

19

Where are valence electrons located

The outer most energy level

20

How much of the earth is water

75%