Elements Compounds And Mixtures

Question 1

What is an Element

Answer 1

An element is a substance that consists of only one type of atom and it cannot be broken down into anything simpler by chemical means

Question 2

What is an Atom?

Answer 2

An atom is the simplest particle of an element that can exist on its own in a stable environment

Question 3

What is a Molecule?

Answer 3

A molecule is a particle that has 2 or more atoms chemically joined together.

Question 4

What is a Period?

Answer 4

A period is a horizontal row in the periodic table

Question 5

What is a Group ?

Answer 5

A group is a vertical column in the periodic table.

Question 6

What does Malleable mean?

Answer 6

Malleable means can be hammered into shape

Question 7

What does Ductile mean?

Answer 7

Ductile means can be drawn into wires.

Question 8

The periodic table is split into ……… and …… ……….?

Answer 8

Metals and non metals

Question 9

What is a Compound?

Answer 9

A compound is a substance formed when 2 or more different elements are chemically combined.

Question 10

what is a Mixture ?

Answer 10

A mixture is 2 or more substances mixed together which are usually easy to separate

Question 11

What are the properties of metals ?

Answer 11

hard,
conduct electricity and heat,
high density,
high lustre,
malleable,
high melting point,
High boiling point,

Question 12

What side are the metals on ?

Answer 12

The left side of the periodic table

Question 13

What are the properties of non metals?

Answer 13

Brittle, do not conduct electricity, dull, gas liquid or solid at room temperature.

Question 14

What does magnesium look like before , during and after it burns?

Answer 14

Before: grey shiny
During: bright white light
After: white ash

Question 15

Name 5 elements

Answer 15

Hydrogen
Helium
Lithium
Magnesium
Boron
Carbon
Silver
Gold
Nitrogen
Oxygen

Question 16

Is hydrogen a metal or not ?

Answer 16

Hydrogen (H) is a non metal

Question 17

Where does the table split?

Answer 17

At Al (aluminium)

Question 18

Name some solid elements

Answer 18

Magnesium, aluminium, silicon, phosphorus, lead, gold, silver

Question 19

Name some gasses on the periodic table

Answer 19

Hydrogen, helium, nitrogen, oxygen, argon, radon , neon, krypton.

Question 20

Name some liquids on the periodic table of elements

Answer 20

Bromine, mercury

Question 21

Magnesium+ nitrogen

Answer 21

Magnesium nitride

Question 22

Nickel + iodine

Answer 22

Nickel iodide

Question 23

Magnesium+ nitrogen + oxygen

Answer 23

Magnesium nitrate

Question 24

Calcium+ carbon+ oxygen

Answer 24

Calcium carbonate

Question 25

Lithium + nitrogen

Answer 25

Lithium nitride

Question 26

Sodium + nitrogen+ oxygen

Answer 26

Sodium nitrate

Question 27

Tin + oxygen

Answer 27

Tin oxide

Question 28

When do you use -ide

Answer 28

When there’s 2 elements

Question 29

When do you use -ate

Answer 29

When there’s 3 elements including oxygen

Question 30

Which elements make magnesium oxide

Answer 30

Magnesium and oxygen

Question 31

How do you make magnesium oxide

Answer 31

Burn magnesium in air.

Question 32

Which elements make iron sulfide?

Answer 32

Iron and sulfur

Question 33

How do you make iron sulfide?

Answer 33

Heat a mixture of iron and sulfur. Iron is dark grey and sulfur is a yellow powder. The mixture glows and the sulfur burns with a blue flame.

Question 34

Word equation for iron sulfide

Answer 34

Iron+ sulfur= iron sulfide

Question 35

What does iron look like

Answer 35

Grey shiny solid

Question 36

What does sulfur look like

Answer 36

Yellow dull powder

Question 37

What does iron sulfide mixture look like

Answer 37

Grey flecks with yellow flecks

Question 38

What does iron sulfide look like

Answer 38

Grey solid, not shiny

Question 39

Are these magnetic A. Iron B. Sulfur C. Iron sulfur mixture D. Iron sulfide

Answer 39

A. Yes B. No C. Iron is but sulfur isn’t D. No

Question 40

Are these soluble in xylene A. Iron B. Sulfur C. Iron sulfur mixture D. Iron sulfide

Answer 40

A. Insoluble B. Soluble C. Iron insoluble but sulfur soluble D. Insoluble

Question 41

What do these look like with acid? A. Iron B. Sulfur C. Iron sulfur mixture D. Iron sulfide

Answer 41

A. Bubbles B. No reaction C. Bubbles D. Rotten eggs smell

Question 42

Do all elements have the same properties

Answer 42

No, Different elements have difterent properties. In a mixture the elements behave as if they were on their own. A compound is a new material that has its own properties.

Question 43

Tell me about the compound of water

Answer 43

Compound is a liquid. Made of hydrogen and oxygen.

Question 44

Tell me about the compound of carbon dioxide

Answer 44

It’s a gas. Made of carbon and oxygen

Question 45

Tell me about the compound of sodium chloride

Answer 45

It’s a solid. Made of sodium and chlorine.

Question 46

Can you lays predict how a compound will turn out

Answer 46

No, you can’t predict the properties of a compound by looking at the properties of the elements that are used to make it. E.g. hydrogen and oxygen are both gases but together make a liquid