Year 8 Term 1&2 - Elements

Question 1

What do atoms in elements look like?

Answer 1

They are all the same size and shape

Question 2

What is the chemical symbol for helium

Answer 2

He

Question 3

Chemical symbol for fluorine

Answer 3

F

Question 4

Chemical symbol for gallium

Answer 4

Ga

Question 5

Chemical symbol for vanadium

Answer 5

V

Question 6

Chemical symbol for manganese

Answer 6

Mn

Question 7

Chemical symbol for magnesium

Answer 7

Mg

Question 8

Chemical symbol for Uranian

Answer 8

U

Question 9

Chemical symbol for potassium

Answer 9

K

Question 10

Chemical symbol for gold

Answer 10

Au

Question 11

What is Li

Answer 11

Lithium

Question 12

What is N

Answer 12

Nitrogen

Question 13

What element is Al

Answer 13

Aluminium

Question 14

What element is Co

Answer 14

Cobalt

Question 15

What element is Co

Answer 15

Cobalt

Question 16

What element is Pb

Answer 16

Lead

Question 17

What chemical symbol is Ne

Answer 17

Neon

Question 18

What element is Ca

Answer 18

Calcium

Question 19

What element is Ra

Answer 19

Radium

Question 20

What element is Rn

Answer 20

Radon

Question 21

What element is Ag

Answer 21

Silver

Question 22

Are metals found on the left or right of the dividing line on the Periodic Table

Answer 22

Left

Question 23

Are there more metals or non-metals?

Answer 23

Metals

Question 24

Describe physical appearance of most metals

Answer 24

Solid at room temperature and shiny, silvery grey colour

Question 25

Do metals conduct electricity when solid?

Answer 25

Yes

Question 26

Do metals conduct heat well?

Answer 26

Yes

Question 27

Do metals have high or low melting pointS?

Answer 27

High

Question 28

Which words apply to metals: ductile, sonorous, malleable, brittle, soft, dense

Answer 28

Sonorous, malleable, dense, ductile

Question 29

How do you test if an element conducts electricity?

Answer 29

Place a fresh sample of an element in a circuit with a bulb; if it conducts electricity the bulb will light, if it doesn’t it won’t.

Question 30

How do you produce magnesium oxide from magnesium?

Answer 30

You burn magnesium over a Bunsen burner flame so that it reacts with the oxygen in the air

Question 31

Two test tubes: one sulphur dioxide and other calcium oxide. What will be the difference once you add universal indicator?

Answer 31

The universal indicator will turn red in sulphur dioxide and blue/purple in calcium oxide. This means that non-metal oxides like sulphur dioxide are acidic, and metal oxides like calcium oxide are alkaline.

Question 32

What colour and pH will magnesium oxide be after adding universal indicator?

Answer 32

Blue/green, pH 9.0 meaning it’s an alkali

Question 33

What colour and pH will phosphorus oxide be when universal Indicator is added?

Answer 33

Red/orange with pH 2.0/3.0, meaning it’s an acid

Question 34

Why is copper an unusual metal?

Answer 34

It is not silvery grey; it’s orangey brown

Question 35

What is unusual about bromine and mercury?

Answer 35

They are both liquid at room temperature

Question 36

What is unusual about graphite?

Answer 36

It conducts electricity well

Question 37

What is unusual about silicon?

Answer 37

It’s a shiny silvery grey non metal

Question 38

What is unusual about lead?

Answer 38

It has a low melting point

Question 39

What does it mean if an element has allotropes?

Answer 39

The element can be put together in different ways, creating different forms of it e.g: carbon turns into diamond and graphite

Question 40

What are some differences between diamond and graphite?

Answer 40

Diamond is transparent and very hard/dense whereas graphite is opaque and soft, and graphite can conduct electricity whereas diamond cannot.

Question 41

What are the properties of metals?

Answer 41

Conduct electricity well High melting points Solid at room temperature Shiny silver grey appearance Conduct heat well