Everything around us is made of __________. These are the substances that objects are made from. They can be natural (e.g. wood and stone) or human–made (e.g. plastic and steel).
Materials and composites: including metals, ceramics and polymers
Short answer
Year 9
1
No diagram
What do you call the features of a material that can be observed or measured?
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
1
No diagram
Match the following key words to their definition.
Materials and composites: including metals, ceramics and polymers
Matching
Year 9
3
No diagram
Which of the following materials can be transparent?
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
2
No diagram
Match the following key words or phrases to their definition.
Materials and composites: including metals, ceramics and polymers
Matching
Year 9
5
No diagram
Scientific methods include observation, measurement, and manipulations (e.g. heating) to determine material properties. All these actions can be part of a scientific ...
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
1
No diagram
Clay and sand both consist of silicates with different particle sizes. Ceramics made from clay are opaque, while glass made from sand is typically transparent. How do these different properties occur?
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
1
No diagram
If you couldn't see them, how would you distinguish between a metal, a ceramic, and a plastic vase of the same shape and size?
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
3
No diagram
Polymers are monomers joined together into long chains, sometimes with chemical connections between the chains. Poly(ester) and poly(propene) are polymers and specific examples of __________.
Materials and composites: including metals, ceramics and polymers
Short answer
Year 9
1
No diagram
Match the following key words to their definition.
Materials and composites: including metals, ceramics and polymers
Matching
Year 9
5
No diagram
Alloys and composites both have new properties compared to their components and can't be separated by simple methods. Steel is an example of an __________, as it is a mixture of iron and other elements.
Materials and composites: including metals, ceramics and polymers
Short answer
Year 9
1
No diagram
A practical method for scientists to determine the physical properties of materials is by conducting tests. How can you distinguish between plain and reinforced concrete if the pieces look similar?
Materials and composites: including metals, ceramics and polymers
Multiple choice
Year 9
1
No diagram
Which of the following three properties make polymers useful for making plastic water bottles?
Structure of polymers
Multiple choice
Year 9
3
No diagram
Plastics are polymers, but not all polymers are plastics. Which of the following materials are classified as polymers?
Structure of polymers
Multiple choice
Year 9
1
No diagram
Models are used in science to test ideas without facing practical or ethical issues. However, they have __________, such as only representing one aspect of a concept rather than the whole.
Structure of polymers
Short answer
Year 9
1
No diagram
Match the following key terms to their definition.
Structure of polymers
Matching
Year 9
5
No diagram
Which of the following properties of rubber makes it useful for making rubber bands?
Structure of polymers
Multiple choice
Year 9
1
No diagram
Consider ice, water, and water vapour. The atoms and molecules are held together differently and with varying strengths. What happens at the boiling point when water turns to water vapour?
Structure of polymers
Multiple choice
Year 9
1
No diagram
Match the following key terms to their definition.
Structure of polymers
Matching
Year 9
4
No diagram
Materials can be natural or synthetic. Natural means they occur in nature. Synthetic means they are __________.
Structure of polymers
Short answer
Year 9
1
No diagram
Polymers can be represented with models. Which list correctly describes the image with three polymer models, from left to right?
Structure of polymers
Multiple choice
Year 9
1
Diagram
Match the following key terms to their description.
Structure of polymers
Matching
Year 9
6
No diagram
Cross–links in polymers make it harder for polymer molecules to slide past each other. __________ in between polymer chains push the long molecules apart so that forces of attraction are weakened.
Structure of polymers
Short answer
Year 9
1
No diagram
A chemical bond is a strong force that holds atoms together in a compound. A chemical bond takes a lot of energy to overcome and break.
Which of the following statements are correct?
Structure of polymers
Multiple choice
Year 9
3
No diagram
If we have a hypothesis, or if we have some experimental evidence showing a pattern, we may be able to __________ what will happen in our next investigation.
The reactivity series for metals
Short answer
Year 9
1
No diagram
Which of the following properties are most likely associated with metals?
The reactivity series for metals
Multiple choice
Year 9
2
No diagram
Match each term to the correct statement.
The reactivity series for metals
Matching
Year 9
5
No diagram
Decide whether the following statement is true or false and why this is correct: 'The elements highlighted in green in this image are all metals.'
The reactivity series for metals
Multiple choice
Year 9
2
Diagram
A pupil wrote the following sentence: 'When a metal reacts, it forms salt and a gas.'
Select the statement which explains this more accurately.
The reactivity series for metals
Multiple choice
Year 9
1
No diagram
Complete the word equation for the following reaction:
magnesium + hydrochloric acid -> __________ + hydrogen
The reactivity series for metals
Short answer
Year 9
1
No diagram
The reactivity of metals can be deduced from their reactions with certain substances. Starting with the least reactive, put the following in order of reactivity.
The reactivity series for metals
Ordering
Year 9
1
No diagram
What happens when tin is added to water and why?
The reactivity series for metals
Multiple choice
Year 9
2
No diagram
The reaction of magnesium with hydrochloric acid is irreversible. Given enough acid and time, the reaction goes to completion. MgCl₂ is very soluble. What would you see when the reaction stops?
The reactivity series for metals
Multiple choice
Year 9
1
Diagram
The reactivity of metals can be deduced from their method of extraction. Starting with the least reactive/easiest to extract, put the following methods of extraction in the correct order.
The reactivity series for metals
Ordering
Year 9
1
No diagram
Match each term to the correct definition.
The reactivity series for metals
Matching
Year 9
4
No diagram
Starting with the least reactive, put the following metals in order of reactivity.
The reactivity series for metals
Ordering
Year 9
1
No diagram
The order of metals on the basis of how reactive they are, is called the __________ of metals. Carbon and hydrogen are often included as reference points.
Chemical reactions: displacement of metals
Short answer
Year 9
1
No diagram
Not all metals react with an acid. For those that do, what would you observe?
Chemical reactions: displacement of metals
Multiple choice
Year 9
3
No diagram
Which of these statements about the metal elements above carbon in the reactivity series are correct?
Chemical reactions: displacement of metals
Multiple choice
Year 9
3
No diagram
Which of these statements about the metal elements above hydrogen in the reactivity series are correct?
Chemical reactions: displacement of metals
Multiple choice
Year 9
2
No diagram
Starting with the least reactive, put these metals in order of reactivity.
Chemical reactions: displacement of metals
Ordering
Year 9
1
No diagram
Graphite (a specific form of carbon) is a non-metal. Why is it unique?
Chemical reactions: displacement of metals
Multiple choice
Year 9
1
No diagram
Which of the following statements are correct representations of displacement reactions?
Chemical reactions: displacement of metals
Multiple choice
Year 9
2
No diagram
What might you observe if a displacement reaction is taking place?
Chemical reactions: displacement of metals
Multiple choice
Year 9
4
No diagram
Consider the thermite reaction: aluminium + iron oxide → iron + aluminium oxide.
What makes this reaction different from displacement reactions performed to confirm the reactivity series in a lab?
Chemical reactions: displacement of metals
Multiple choice
Year 9
1
No diagram
Why is carbon included in the reactivity series of metals?
Chemical reactions: displacement of metals
Multiple choice
Year 9
1
No diagram
Why is hydrogen included in the reactivity series of metals?
Chemical reactions: displacement of metals
Multiple choice
Year 9
1
No diagram
Match each term to the correct definition.
Chemical reactions: displacement of metals
Matching
Year 9
5
No diagram
When magnesium reacts with acid, hydrogen gas is produced which we can collect in a test tube. To test if it is hydrogen, we hold a burning splint to the test tube and hear a __________.
Catalysts
Short answer
Year 9
1
No diagram
Some metals, like gold and platinum, are found in their native state in nature, and nothing much happens when other chemicals are added. We call these metals very __________.
