Chapter 16

Question 1

Chemistry

Answer 1

the study of matter, matter composition, the matter’s properties and how matter reacts with other matter

Question 2

Matter

Answer 2

Anything that has mass and volume

Question 3

Chemical symbols

Answer 3

short or abbreviated name of an element

Question 4

Atom

Answer 4

smallest part of an element that retains the properties of the element

Question 5

When was the first time the atom was seen

Answer 5

1981

Question 6

How long was the existence of atoms known

Answer 6

for 2,000 years

Question 7

How much bigger are Protons and neutrons than an electron

Answer 7

1800 times more mass

Question 8

Quarks

Answer 8

Very small particles that compose protons and neutrons

Question 9

The 6 types of quarks

Answer 9

up, charm, down, bottom, top, and strange

Question 10

unit for the mass of an atom

Answer 10

atomic mass unit

Question 11

Atomic Number

Answer 11

the number of protons an element has in its nucleus

Question 12

Mass Number

Answer 12

the sum of protons and neutrons an element has in its nucleus

Question 13

Isotopes

Answer 13

atoms of the same element but different mass numbers and is because of a difference in neutrons

Question 14

Periodic

Answer 14

repeated pattern

Question 15

Who made the periodic table and when

Answer 15

Dmitri Mendeleev in the 1800

Question 16

Who changed the period table to be arranged based on the atomic number

Answer 16

Henry Moseley and in 1913

Question 17

periods

Answer 17

Horizontal rows of elements on the periodic table and numbered for the amount of shells around the nucleus

Question 18

Groups

Answer 18

Vertical columns of elements and every element in the same group have the same number of electrons in the atom’s outermost energy level.

Question 19

Valence electrons

Answer 19

Electrons in the outermost energy level.

Question 20

Group 1

Answer 20

Alkali metals

Question 21

Group 2

Answer 21

Alkaline Earth metals

Question 22

Group 3-12

Answer 22

Transition Metals

Question 23

Group 13

Answer 23

Boron

Question 24

Group 14

Answer 24

Carbon

Question 25

Group 15

Answer 25

Nitrogen

Question 26

Group 16

Answer 26

Oxygen

Question 27

Group 17

Answer 27

Halogens

Question 28

Group 18

Answer 28

Noble gases

Question 29

How electrons are in the 1st shell

Answer 29

1-2

Question 30

How electrons are in the 2nd shell

Answer 30

1-8

Question 31

How electrons are in the 3rd shell

Answer 31

1-8, 18

Question 32

How electrons are in the 4th shell

Answer 32

1-8, 18, 32

Question 33

Neutral Atom

Answer 33

an atom that does not have a charge

Question 34

Ion

Answer 34

an atom with a charge

Question 35

Stable Atom

Answer 35

an atom that has its outer energy level full

Question 36

Substance

Answer 36

a type of matter with a fix composition

Question 37

Molecule

Answer 37

2 or more atoms that combine