Chapter 2

Question 1

Electrons

Answer 1

One of the three particles that makes up an atom, it sits on the outside shell and has negative charge.

Question 2

Nucleus

Answer 2

The positively charged center of an atom, it contains the mass and is made up of protons and neutrons

Question 3

Protons

Answer 3

Another one of the three particles that make up an atom, protons reside inside of the nucleus and has a positive charge

Question 4

Neutrons

Answer 4

5e third particle that makes up an atom, sits with the protons and has a neutral charge

Question 5

Elements

Answer 5

Fundamental substances that only contain one type of atom, atoms of each element have characteristics that help to distinguish them from other elements.
There are more than 100 elements, all depicted on the periodic table, 92 occur naturally

98% of all living things are made up of 6 key elements: Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur

Question 6

Atomic Number

Answer 6

Equal to the number of protons in an atom

Question 7

Atomic Mass

Answer 7

Equal to the total number of protons and neutrons in the nucleus of an atom

Question 8

Atomic Weight

Answer 8

( Relative atomic mass) equal to the average atomic mass numbers of multiple versions of one element

Question 9

Isotopes

Answer 9

Forms of and element with different numbers of neutrons, thus a different mass number

Question 10

Radioisotopes

Question 11

Molecule

Question 12

Orbital

Question 13

Octet

Question 14

Chemical bond

Question 15

Covalent bond

Question 16

Compound

Question 17

Electronegativity

Question 18

Polar/Non-polar Covalent Bond

Question 19

Ion

Question 20

Cation/Anion

Question 21

Hydrogen Bond

Question 22

Van der Waals Forces

Question 23

Cohesion

Question 24

Mole

Question 25

Avogadro’s Number

Question 26

Acids &Bases

Question 27

Atom

Answer 27

What composes all living matter, little tiny building blocks with an electric charge