Chapter 2

Question 0

What is the charge of a proton?

Answer 0

Positive +

Question 1

Smallest unit of matter that enters into chemical reactions.

Answer 1

Atom

Question 2

What is the charge of a neutron

Answer 2

No charge.

Question 3

What is the charge of a electron?

Answer 3

Negative -

Question 4

The atomic number is equal to____

Answer 4

Protons

Question 5

The atomic weight is equal to _____

Answer 5

Protons+neutrons+electrons

Question 6

Isotopes of an element are atoms with different __________________

Answer 6

Numbers of neutrons

Question 7

First shell____
Second shell ____
Third shell ____

Answer 7

• 2
• 8
• 8

Question 8

What is the outermost shell called?

Answer 8

Valence

Question 9

Which particle is found in the nucleus of an atom and has no electrical charge?

Answer 9

Neutron

Question 10

2 particles found in the nucleus?

Answer 10

Protons and neutrons

Question 11

Isotopes are atoms of the same element that differ in _____

Answer 11

Neutrons

Question 12

The number of protons and electrons in a neutral atom are _____

Answer 12

Equal

Question 13

Give up electrons (positive)

Answer 13

Cation

Question 14

Need electrons. (Negative)

Answer 14

Anion

Question 15

When atoms combine by sharing or transferring valence electrons

Answer 15

Chemical bonds

Question 16

Two or more atoms held together by chemical bonds. Example: H2O

Answer 16

Molecule

Question 17

A molecule composed of more than one element.

Answer 17

Compound

Question 18

Only the _______ of atoms interact, so they determine an atoms chemical behavior.

Answer 18

Electrons

Question 19

3 principal types of chemical bonds.

Answer 19

• ionic bonds.
• covalent bonds.
• hydrogen bonds.