CHAPTER 2

Question 1

who gave the atomic theory? and when?

Answer 1

John Dalton in the early 1800s

Question 2

Electron was discovered by?

Answer 2

Joseph John Thomson

Question 3

who advanced Thomson’s theory?

Answer 3

Ernest Rutherford

Question 4

who refined Rutherford’s theory?

Answer 4

Niels Bohr

Question 5

Three fundamental components of an atom?

Answer 5

• Electrons
• Neutrons
• Protons

Question 6

What is the nucleus made up of?

Answer 6

Protons and Neutrons

Question 7

What is orbiting the nucleus?

Answer 7

Electrons

Question 8

Protons are what charge?

Answer 8

Positive charged

Question 9

Neutrons are what charged?

Answer 9

No charge (neutral)

Question 10

Electrons are what charge?

Answer 10

negative charge

Question 11

An atom has an equal amount of ___ and ___.

Answer 11

Protons, Electrons

Question 12

If negative charges outnumber the positive, it is called?

Answer 12

Negative Ion

Question 13

If positive charges outnumber the negative, it is called?

Answer 13

Positive Ion

Question 14

Binding energy holds ___ and ___ together to form the ___.

Answer 14

Protons, Neutrons, Nucleus

Question 15

Binding energy is a measure of?

Answer 15

The amount if energy necessary to split an atom

Question 16

Electron Shells are defined as …?

Answer 16

Energy Levels

Question 17

Name electron shells from nearest to farthest from the nucleus

Answer 17

K, L, M, N, O, P, Q

Question 18

electrons orbit the nucleus at ___ ___ velocities.

Answer 18

Very high

Question 19

Atomic Number refers to …?

Answer 19

of protons the nucleus contains

Question 20

Atomic Mass refers to …?

Answer 20

of protons and neutrons in a nucleus

Question 21

what composes compounds?

Answer 21

Elements

Question 22

what forms a molecule?

Answer 22

Two or more atoms bonded together

Question 23

Isotopes

Answer 23

Same # of protons but different # of neutrons

Question 24

Isotones

Answer 24

same # of neutrons but different # of protons

Question 25

Isobars

Answer 25

different # of protons but same total # of protons and neutrons

Question 26

Isomers

Answer 26

Same # of protons and neutrons but different amounts of energy within their nuclei

Question 27

two primary ways atoms bond are …?

Answer 27

Ionic and covalent bonding

Question 28

Ionic Bonding

Answer 28

when an atom gives up an electron to another atom. The difference in the charge is what attracts them together.

Question 29

Covalent Bonding

Answer 29

two atoms sharing electrons, then orbits both nuclei in an 8 figure.