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year 9 Science Homework Week 5
By Naomi Arthur
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Last updated over 4 years ago
22 questions
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Question 1
1.
Pure metals are…
Malleable and hard
Inflexible and very soft
Malleable and very soft
Inflexible and hard
Question 2
2.
What is an alloy?
A solid mixture containing at least one metal
A solid mixture containing at least one non-metal
A solid mixture containing at least two metal
A solid mixture containing at least one metal and one non-metal
Question 3
3.
Compared to iron, steel is…
More malleable and stronger
Less malleable and weaker
More malleable and weaker
Less malleable and stronger
Question 4
4.
Which of these is an alloy?
Iron
Gold
Steel
Question 5
5.
Which of these is not an alloy?
Steel
Zinc
Bronze
Question 6
6.
How are atoms arranged in a pure metal?
Regular lattice
Irregular
Randomly with space between particles
Question 7
7.
D.Which of these is an alloy?
Substance containing oxygen and carbon
Substance containing platinum
Substance containing tin and copper
Question 8
8.
Which is most malleable?
Iron
Steel
Bronze
Question 9
9.
Which is strongest?
Iron
Steel
Zinc
Question 10
10.
What is bronze an alloy of?
Copper and gold
Copper and tin
Tin and gold
Question 11
11.
What is brass an alloy of?
Copper and zinc
Copper and tin
Tin and zinc
Question 12
12.
What is the gold used in jewellery commonly alloyed with?
Copper, tin and silver
Copper, zinc and tin
Copper, zinc and silver
Question 13
13.
What group on the periodic table are the alkali metals?
1
2
7
Question 14
14.
How does the atomic radius change going down the group?
Decreases
Stays the same
Increases
Question 15
15.
Which alkali metal has the largest atomic radius?
Lithium
Caesium
Francium
Question 16
16.
Which is the least reactive?
Lithium
Caesium
Sodium
Question 17
17.
Which is the least reactive?
Potassium
Caesium
Sodium
Question 18
18.
Which subatomic particle gives the nucleus a positive charge?
Electron
Neutron
Proton
Question 19
19.
What is the force called that holds the outer electron near the nucleus?
Electrostatic gravity
Electrostatic attraction
Electrostatic repulsion
Question 20
20.
Why is the electrostatic attraction weaker in potassium than lithium?
Potassium has a larger atomic radius
Lithium has a larger atomic radius
Lithium is bigger
Question 21
21.
Which is the product in the reaction of an alkali metal and oxygen?
Metal hydroxide
Metal oxide
Metal oxide + hydrogen
Metal hydroxide + hydrogen
Question 22
22.
Which is the product in the reaction of an alkali metal and water?
Metal hydroxide
Metal oxide
Metal oxide + hydrogen
Metal hydroxide + hydrogen