Valence Electrons

Question 1

charge of a proton

Answer 1

positive

Question 2

charge of a electron

Answer 2

negaitve

Question 3

opposite charges

Answer 3

attract

Question 4

like charges

Answer 4

repel

Question 5

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

Answer 5

Uneven/assemtrical and a partial charge

Question 6

How do we know things are charged

Answer 6

How they act next to other things that are charged

Question 7

What does a chemical formula show

Answer 7

The ratio of chemicals in a compound

Question 8

Why do elements form compounds

Answer 8

They are attracted to each other’s electrons

Question 9

A stable element has how many stable electrons

Answer 9

8

Question 10

What 2 elements need only 2 valence electrons

Answer 10

H and He

Question 11

To become stable, elements form

Answer 11

Compounds/bonds

Question 12

How do elements form bonds

Answer 12

Stealing, losing, or sharing electrons

Question 13

A pure substance made up of only one atom

Answer 13

Element

Question 14

Two or more elements combined

Answer 14

Compound

Question 15

Equal number of protons in an atom

Answer 15

Atomic number

Question 16

of protons is equal to the

Answer 16

of electrons

Question 17

Energy level 1 can hold how many electrons

Answer 17

2

Question 18

Energy level 3 can hold how many ve

Answer 18

18

Question 19

Where are valence electrons located

Answer 19

The outer most energy level

Question 20

How much of the earth is water

Answer 20

75%