Metals and Materials ETT

Question 1

Complete the equation:

zinc + hydrochloric acid ⇢ ___________ + __________

Answer 1

zinc chloride + hydrogen

Question 2

Name two properties of metals

Answer 2

Any two from:

• Shiny
• Conduct heat
• Conduct Electricity
• Maleable
• Sonorous

Question 3

Complete the equation:

magnesium + hydrochloric acid ⇢ ___________ + __________

Answer 3

magnesium chloride + hydrogen

Question 4

Put these metals in order of reactivity from most to least reactive:

copper, magnesium, lead

Answer 4

Magnesium, Lead, Copper

Question 5

How do you test for hydrogen?

Answer 5

Hold a lit splint at the end of a test tube filled with gas, if the gas makes a squeaky pop, it is hydrogen.

Question 6

Complete the equation:

magnesium + oxygen ⇢ ___________

Answer 6

magnesium oxide.

Question 7

Complete the equation:

zinc + oxygen ⇢ ___________

Answer 7

zinc oxide

Question 8

Complete the equation:

copper + oxygen ⇢ ___________

Answer 8

copper oxide

Question 9

Complete the equation:

potassium + water ⇢ _________________ + ________________

Answer 9

potassium hydroxide + hydrogen

Question 10

Complete the equation:

sodium + water ⇢ _________________ + ________________

Answer 10

sodium hydroxide + hydrogen

Question 11

Complete the equation:

lithium + water ⇢ _________________ + ________________

Answer 11

lithium hydroxide + hydrogen

Question 12

Complete the displacement equation:

iron + copper sulfate ⇢ _____________ + copper

Answer 12

iron sulfate

Question 13

What type of reaction happens when a more reactive metal ‘pushes out’ a less reactive metal?

Answer 13

Displacement reaction

Question 14

What is the name for a rock that you can extract metal from?

Answer 14

Ore

Question 15

How can carbon be used to extract a pure metal from a metal oxide?

Answer 15

Carbon reacts with the oxygen in the oxide creating carbon dioxide and leaving a pure metal.

Question 16

Complete the equation:

carbon + copper oxide ⇢ ___________ + ___________

Answer 16

copper + carbon dioxide

Question 17

Complete the equation:

carbon + lead oxide ⇢ ___________ + ____________

Answer 17

lead + carbon dioxide

Question 18

What two things are needed for rusting to happen?

Answer 18

Oxygen and water

Question 19

What could you do to prevent rusting?

Answer 19

Paint the metal

or

Put a more reactive metal on it (sacrificial protection)

Question 20

Why does metal in saltwater rust more quickly?

Answer 20

The salt acts as a catalyst.

Question 21

Why does covering a metal in grease stop it from rusting?

Answer 21

The grease acts as a barrier to stop water coming into contact with the metal.

Question 22

Name the acid that makes chlorides

Answer 22

Hydrochloric acid

Question 23

Name the acid that makes sulfates

Answer 23

Sulfuric acid

Question 24

Name the acid that makes nitrates

Answer 24

Nitric acid

Question 25

What is the test for hydrogen called?

Answer 25

Squeaky pop test

Question 26

What is formulation?

Answer 26

A mixture designed to make a useful product

Question 27

What name is given to a very long molecule with repeating units?

Answer 27

Polymer

Question 28

Give two examples of natural polymers.

Answer 28

Any two from: DNA, wood, rubber, cotton, wool

Question 29

What does reproducibility mean?

Answer 29

When another group does the same experiment and gets similar results.

Question 30

What does repeatability mean?

Answer 30

When I repeat the experiment and get similar results

Question 31

Plastic is a man-made polymer. What is plastic made from?

Answer 31

Crude oil