Questions & Answers
Browse all 25 questions from the
Chemistry Wonders for Young Scientists study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the smallest part of an element that still acts like that element?
-
A
An atom
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B
A molecule
-
C
A cell
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D
A rock
2
Which metal is a liquid at room temperature?
-
A
Iron
-
B
Mercury
-
C
Gold
-
D
Copper
3
What do we call the table that lists all the known elements?
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A
The Math Grid
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B
The Periodic Table
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C
The Shopping List
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D
The Alphabet Chart
4
Which gas do plants need to take in to make their own food?
-
A
Oxygen
-
B
Nitrogen
-
C
Carbon dioxide
-
D
Helium
5
What is the chemical name for common table salt?
-
A
Sodium chloride
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B
Sugar
-
C
Calcium
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D
Water
6
What is water made of when you break it down into elements?
-
A
Gold and Silver
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B
Hydrogen and Oxygen
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C
Iron and Carbon
-
D
Dirt and Air
7
Which gas makes up most of the air we breathe?
-
A
Oxygen
-
B
Helium
-
C
Nitrogen
-
D
Neon
8
What state of matter is a diamond?
-
A
Gas
-
B
Liquid
-
C
Solid
-
D
Plasma
9
What is the center of an atom called?
-
A
The Nucleus
-
B
The Shell
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C
The Outer Layer
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D
The Button
10
Which element is used to make the inside of a pencil (graphite)?
-
A
Lead
-
B
Carbon
-
C
Iron
-
D
Silver
11
When ice melts into water, what is this change called?
-
A
Freezing
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B
Burning
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C
Phase change
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D
Cooking
12
What color does litmus paper turn when it touches a strong acid?
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A
Blue
-
B
Green
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C
Red
-
D
Yellow
13
Which element is the lightest in the entire universe?
-
A
Oxygen
-
B
Hydrogen
-
C
Gold
-
D
Lead
14
What do we call a mixture where one substance dissolves into another?
-
A
A solution
-
B
A solid
-
C
A rock
-
D
A gas
15
What is the scientific name for the process of plants using sunlight to create energy?
-
A
Breathing
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B
Photosynthesis
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C
Sleeping
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D
Eating
16
Which gas do humans breathe out as a waste product?
-
A
Oxygen
-
B
Carbon dioxide
-
C
Hydrogen
-
D
Argon
17
What is the chemical symbol for Oxygen?
18
Which material is an example of a natural polymer?
-
A
Plastic
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B
Rubber
-
C
Glass
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D
Steel
19
What is the main substance that makes up the Earth's atmosphere?
-
A
Oxygen
-
B
Nitrogen
-
C
Helium
-
D
Carbon
20
At what temperature does pure water freeze at sea level?
-
A
0 degrees Celsius
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B
50 degrees Celsius
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C
100 degrees Celsius
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D
20 degrees Celsius
21
What is formed when two or more atoms bond together?
-
A
A molecule
-
B
A proton
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C
A neutron
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D
A light
22
Which of these is a noble gas that makes signs glow?
-
A
Oxygen
-
B
Neon
-
C
Carbon
-
D
Iron
23
What is the chemical name for the gas inside a balloon that makes it float?
-
A
Oxygen
-
B
Helium
-
C
Nitrogen
-
D
Carbon dioxide
24
What is the process of a liquid turning into a gas called?
-
A
Evaporation
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B
Freezing
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C
Melting
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D
Condensation
25
What is a substance called that cannot be broken down into simpler substances?
-
A
An element
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B
A compound
-
C
A mixture
-
D
A rock
