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WorksheetsChemistry Science questions
Total questions: 16
Worksheet time: 8mins
The composition of air
1% oxygen, 88% nitrogen
12% oxygen, 65% nitrogen
21% oxygen and 78% nitrogen
78% oxygen, 21% nitrogen
Gases responsible for global warming
Hydrogen and oxygen
Carbon dioxide and sulfur dioxide
Nitrogen and Argon
Ammonia and Sulfur
Which ones are acids?
milk and soap
coke and orange juice
blood and water
antacid
Which elements are in a glucose molecule?
N, O, H
P, O, H
S, O, H
H, O, C
How many bonds in molecule of water?
2 bonds
3 bonds
4 bonds
impossible to count
What is the raw material of paper?
Crude oil
Fossil fuel
Trees
Stones
Why seawater is undrinkable?
too many dissolved salts
pH is neutral
contains useful nutrients
don't pick me ;)
What is the most abundant element after oxygen on the earth's crust?
Nitrogen
Hydrogen
Silicon
Iron
Which one is physical property?
Corrosion
Combustion
Reactivity with oxygen
Boiling point
Molecular mass of carbon dioxide
44 g/mol
18 g/mol
16 g/mol
32 g/mol
Plastic is the product of oil
TRUE
FALSE
School tie is made of polyester
TRUE
FALSE
Kazakhstan is the biggest producer of diamond
TRUE
FALSE
A pencil is mostly made from graphite
TRUE
FALSE
Which country Mr Patrick from?
Brazil
Jamaica
South Africa
North Africa
Catalytic converters are usually made from:
carbon
hydrogen
transition metals
alkaline metals
