Chapter 2

Question 1

Matter

Answer 1

Anything that takes up space and has mass

Question 2

Non polar covalent bond

Answer 2

Electron density is symmetrical
Pic looks symmetrical

Question 3

Element

Answer 3

Basic substance- makes up all matter
Ex- carbon, nitrogen, oxygen, hydrogen
(The 4 that make up human body)

Question 4

Atom

Answer 4

Smallest unit of element that still retains element properties

Question 5

Atomic number

Answer 5

How many protons atom has

Question 6

Neutrons

Answer 6

Have no charge (neutral)

Question 7

Mass number

Answer 7

Sum of protons and neutrons

Question 8

Isotopes of the same element-

Answer 8

Differ in number of neutrons so therefore differ in weight

Question 9

Molecule

Answer 9

When atoms bond with each other to form a chemical unit

Question 10

Compound

Answer 10

When different atoms combine
Ex- oxygen plus 2 hydrogen atoms equals water

Question 11

Covalent bonds

Answer 11

Created by atoms sharing electrons

Question 12

Ionic bond

Answer 12

Created by electrical attraction b/n ions

Question 13

Ion

Answer 13

A charged atom

Question 14

Cation

Answer 14

Positively charged ion

Question 15

Anions

Answer 15

Negatively charged ions