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WorksheetsChemistry - Exploring science 9 revision
Total questions: 17
Worksheet time: 12mins
Wood, sand, air, gold are examples of:
natural materials
metals
synthetic materials
Ceramics, paper, vulcanized rubber are examples of:
natural materials
metals
synthetic materials
Which material has the best electrical conductivity?
Bamboo
Copper
PVC
Bricks
Solid material:
fixed volume and fixed shape
fixed volume but shape varies
volume and shape vary
fixed shape but volume varies
Liquid material
Fixed volume and fixed shape
fixed volume but shape varies
volume and shape vary
fixed shape but volume varies
Gas material:
fixed volume and fixed shape
fixed volume but shape varies
volume and shape vary
fixed shape but volume varies
Pick the two best heat insulators in this list (more than one answer!)
china
bricks
copper
iron
Pick 2 properties of ceramics (more than one answer!)
electrical conductors
hard
brittle
elastic
Pick 3 examples of polymers (more than one answer!)
Magnesium
rubber
PVC
poly(ethene)
platinum
Pick all materials used to make concrete (more than one answer!)
cement
water
aggregate
sand
a combination of two or more materials, with some properties of each is called a _________ _______ (2 words)
(a)
Pick all the composite materials in this list: (more than one answer!)
Wood
Concrete
Iron
GRP (Glass-reinforced Plastic)
PVC
2 properties of 'Physical changes' (more than one answer!)
new substances formed
no new substances formed
easy to reverse
hard to reverse
2 Properties of Chemical reactions (more than one answer!)
new substances formed
no new substances formed
easy to reverse
hard to reverse
The 'glowing splint test' is used to identify the presence of oxygen. What happens when we insert a glowing splint in a test tube containing oxygen?
The test tube explodes
the splint completely goes out (lights out)
the splint relights.
the splint stays the same
Which nails would rust?
A
B
C
A and C
What can be observed after iron has displaced copper? (more than one answer)
The solution has turned from blue to green.
Iron metal has disappeared
Reddish copper metal has deposited on the nail.
The nail has dissolved completely.
