Chemistry Test Revision

Question 1

Types of subatomic particles

Answer 1

Electrons, Neurons and Protons

Question 2

What charge does a proton have?

Answer 2

Positive charge of +1

Question 3

What charge does a neutron have?

Answer 3

Neutral charge of 0

Question 4

What charge does an electron have?

Answer 4

Negative charge of -1

Question 5

How to find the atomic mass?

Answer 5

Atomic mass = number of protons + neutrons

Question 6

How to find the atomic number?

Answer 6

Atomic number = number of protons

Question 7

How to find the number of protons?

Answer 7

Number of Protons = Atomic number

OR

Number of Protons = Number of electrons

Question 8

How to find the number of electrons?

Answer 8

Number of Electrons = number of protons

Question 9

How to find the number of neutrons?

Answer 9

Number of Neutrons = Atomic mass - number of protons

Question 10

What are the ten chemical families?

Answer 10

alkali metals
alkali earth metals
transition metals
post-transition metals
metalloids
reactive nonmetals
halogens
noble gases
lanthanides
actinides

Question 11

What are ions?

Answer 11

Atoms with more or less electrons than protons (negatively or positively charged)

Question 12

What are Valence electrons?

Answer 12

Electrons on the outer electron shell

Question 13

How many electrons can fit on each shell?

Answer 13

2, 8, 8

Question 14

What is the thing that an atom really wants?

Answer 14

To have a full outer shell

Question 15

Why are noble gasses stable?

Answer 15

Because they have a full valence electron shell

Question 16

Why are atoms with 7 electrons so reactive?

Answer 16

Because they are only one electron away from having a full shell

Question 17

What is Ionic Bonding?

Answer 17

A process where atoms give or take electrons from each other and then are bonded

Question 18

What type of bonding is between metals and non metals?

Answer 18

Ionic Bonding

Question 19

What type of bonding is between metals and non metals?

Answer 19

Covalent Bonding

Question 20

When are atoms neutral?

Answer 20

When they have the same number of protons and neutrons

Question 21

What is the mass of a proton?

Answer 21

1

Question 22

What is the mass of a neutron?

Answer 22

1

Question 23

What is the mass of an electron?

Answer 23

0 (1/1800)

Question 24

Where are protons located?

Answer 24

In the nucleus

Question 26

Where are neutrons located?

Answer 26

In the nucleus

Question 27

Where are electrons located?

Answer 27

Orbiting nucleus in electron shells

Question 28

What is an atom?

Answer 28

Atoms are the basic particles of the chemical elements Atoms are the building blocks of life

Question 29

What is an element?

Answer 29

A substance found on the periodic table (H = Hydrogen)

Question 30

What is a compound?

Answer 30

A mixture of two or more elemwnts found on the periodic table ( Hydrogen + Oxygen = H2O )

Question 31

What is an isotope?

Answer 31

Atoms of the same element but with a different number of neutrons (number of protons and electrons stays same)

Question 32

Exanples of isotopes

Answer 32

Carbon 12 = 6 neutrons Carbon 13 = 7 neutrons Carbon 14 = 8 neutrons

Question 33

Are groups on the periodic table columns or rows? (Down or across)

Answer 33

Columns (down)

Question 34

What does the group number tell you?

Answer 34

How many electons are in the atoms outer shell

Question 35

Is the

Question 36

Are periods on the periodic table columns or rows? (Down or across)

Answer 36

Rows / Across

Question 37

What does the period number tell you?

Answer 37

Says how many electron shells are being filled

Question 38

What is ionic bonding

Answer 38

A bond between a non metal and a metal

Question 39

What is covalent bonding

Answer 39

A bond between two metals