Chapter 7: Atomic Theory

Question 1

Who created the Bohr Diagram?

Answer 1

Niels Bohr

Question 2

Nucleus

Answer 2

The center part of the atom

Question 3

Parts of the Atoms

Answer 3

Protons
Electrons
Neutrons

Question 4

Protons

Answer 4

Positively charged

Question 5

Neutrons

Answer 5

Uncharged

Question 6

Electrons

Answer 6

Negatively charged; found orbiting around the nucleus

Question 7

Where electrons are located

Answer 7

Electron shells

Question 8

What does the Bohr diagram show?

Answer 8

Represents the electron arrangement

Question 9

Formula to find the neutrons

Answer 9

Atomic Mass - Atomic Number

Question 10

Atoms in the same group (vertical) have the same amount of ____?

Answer 10

Valence Electrons

Question 11

Atoms in the same row (horizontal) have the same number of ____?

Answer 11

Electron Shells

Question 12

What is a Valence Shell?

Answer 12

The outer most electron shell

Question 13

Nobles gases have a ____ _______ _____?

Answer 13

full valence shell

Question 14

Discriptions of a Noble gas:

Answer 14

1. stable
2. unreative

Question 15

How do other elements achieve a full shell?

Answer 15

by gaining or losing electrons

Question 16

When you gain an electron, its ________?

Answer 16

negative

Question 17

When you lose an electron, its ________?

Answer 17

positive

Question 18

Negative = ??

Answer 18

Addition

Question 19

Positive = ??

Answer 19

Subtraction