Chem Unit 1 Review Lessons 1&2

Question 1

A Element has

Answer 1

The same type of atom

Question 2

A Compound has

Answer 2

The same type of particle

Question 3

Mixtures have

Answer 3

More than 1 types of of particle

Question 4

Atoms are ______ particle of an element

Answer 4

Smallest

Question 5

What are the 3 subatomic particles of an atom

Answer 5

Proton, Neutron, Electron

Question 6

Are protons positively charged or negative?

Answer 6

Positive

Question 7

Where are protons found ?

Answer 7

Inside the nucleus

Question 8

Protons are 2000x ______ than an electron?

Answer 8

Bigger

Question 9

What is the charge on neutrons?

Answer 9

No charge

Question 10

Where are neutrons found?

Answer 10

Inside the nucleus

Question 11

Neutron are 2000x _______ than an electron

Answer 11

Bigger

Question 12

What is the charge on Electrons

Answer 12

Negative

Question 13

Where are electrons found

Answer 13

In energy levels

Question 14

Electrons are 2000x _____ than protons and neutrons

Answer 14

Smaller

Question 15

Atomic number is

Answer 15

The number of protons in the nucleus of an atom

Question 16

Atomic mass is

Answer 16

The total number of protons and neutrons in the nucleus

Question 17

The number of neutrons is found by

Answer 17

Subtracting the atomic number form the atomic mass

Question 18

The energy level closest to the nucleus can hold how many electrons?

Answer 18

2

Question 19

A full valence energy level means

Answer 19

A stable atom

Question 20

What charge is a cation

Answer 20

Positive

Question 21

Cations are formed when a atom _____ electrons to become stable

Answer 21

Loses

Question 22

Al3+ means

Answer 22

An atoms lost 3 electrons

Question 23

What charge do anions have

Answer 23

Negative

Question 24

Anions are formed when an atom _____ electrons to become stable

Answer 24

Gains

Question 25

O2- means

Answer 25

An atom gained 2 electrons

Question 26

The more electron an atom has, the more _______ charged it is

Answer 26

Negatively

Question 27

Metal atoms tend to form…

Answer 27

Cations

Question 28

Non metal atoms tend to form…

Answer 28

Anions

Question 29

Groups on a periodic table are…

Answer 29

Vertical

Question 30

Groups determine the # of

Answer 30

Valence electrons

Question 31

Group 1 on the periodic table is…

Answer 31

Alkali metals

Question 32

Groups 2 on the periodic table is..

Answer 32

Alkaline earth metals

Question 33

Groups 17 on the periodic table is

Answer 33

Halogens

Question 34

Group 18 on the periodic table is

Answer 34

Noble gases

Question 35

Non metals tend to gain valence electrons and form____

Answer 35

Anions

Question 36

Metals tend to lose valence electrons and form____

Answer 36

Cations

Question 37

In 1896 Dimitri Mendeleev created the

Answer 37

Periodic law

Question 38

Periodic law arranged elements in order of _____ atomic mass

Answer 38

Increasing