Compounds

Question 1

Chemical name for H20

Answer 1

Water

Question 2

Chemical name for NH3

Answer 2

Ammonia

Question 3

Chemical name for NaCl

Answer 3

Sodium Chloride

Question 4

Chemical name for MgO

Answer 4

Magnesium Oxide

Question 5

Chemical name for CaBr2

Answer 5

Calcium Bromide

Question 6

The prefixes mono, di- and tri- tell us what?

Answer 6

How many atoms are in the molecule

Question 7

Name the 5 Diatomic elements

Answer 7

Hydrogen
Helium
Chlorine
Nitrogen
Oxygen

Question 8

What does diatomic mean

Answer 8

Consisting of 2 atoms

Question 9

NaCl (Sodium Chloride) is also known as?

Answer 9

Salt

Question 10

Differentiate between atomic numbers and atomic mass

Answer 10

The Atomic number tells us how many protons are inside the nucleus of that atom and the Mass number is the average number of protons + neutron’s for that type of atom

Question 11

When a metal reacts with oxygen they form?

Answer 11

Metal Oxide

Question 12

When iron reacts with oxygen you get?

Answer 12

Iron Oxide

Question 13

What is iron oxide

Answer 13

It is a reddish brown powder

Question 14

When metal magnesium reacts with oxygen you get?

Answer 14

Magnesium Oxide

Question 15

Magnesium oxide is a?

Answer 15

white powder

Question 16

Iron Metal + Oxygen + Water will give you?

Answer 16

Rust

Question 17

When iron reacts with water and oxygen you get?

Answer 17

Iron Hydroxide

Question 18

Iron Oxide is also known as?

Answer 18

Rust

Question 19

Name 2 ways to prevent rusting

Answer 19

Painting
Electroplating (coating in a thin layer of chromium or zinc)

Question 20

Non metal + Oxygen –> ?

Answer 20

Non-metal oxide

Question 21

Allotropes is another word for?

Answer 21

Different forms

Question 22

Name the 4 allotropes of carbon

Answer 22

Coal
Graphite
Diamond
Buckminsterfullerene

Question 23

Name the 3 different forms Of Sulfur

Answer 23

Orthorhombic
Moniclinic
Plastic

Question 24

What colour does oxygen burn with

Answer 24

An orange glow

Question 25

When sulfur is burnt in oxygen what colour is the flame burnt with?

Answer 25

Blue flame

Question 26

If carbon dioxide and sulfur dioxide are in the atmosphere, what will form?

Answer 26

Acid Rain

Question 27

Acids have a Ph in the range of ?

Answer 27

1-6

Question 28

A neutral substance has a Ph level of?

Answer 28

7

Question 29

What colour will a neutral substance change in an indicator?

Answer 29

Green

Question 30

Bases have a Ph in the range of?

Answer 30

8-14

Question 31

What is neutralisation reaction

Answer 31

When an acid and base react together

Question 32

Acid + metal oxide --> ?

Answer 32

salt + water

Question 33

Name 2 problems acid rain can cause in the world?

Answer 33

Can slowly corrode buildings Can cause damage to historical bulidings or landmarks Causes rivers to become more acidic

Question 34

What can be used to make soil less acidic?

Answer 34

Limestone

Question 35

acid + metal hydroxide --> ?

Answer 35

hydroxide salt + water

Question 36

acid + metal carbonate -->

Answer 36

Salt + carbon dioxide + water

Question 37

Acid + metal + salt -->

Answer 37

Hydrogen Gas