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Materials and Substances Quiz

#1

What is the chemical symbol for gold?

Au
Explanation

Symbol for the element gold on the periodic table.

#2

Which of the following is a noble gas?

Neon
Explanation

Element belonging to the noble gas group on the periodic table.

#3

What is the chemical symbol for iron?

Fe
Explanation

Symbol for the element iron on the periodic table.

#4

Which gas is most abundant in Earth's atmosphere?

Nitrogen
Explanation

Most prevalent gas in Earth's atmosphere, making up approximately 78% of the air.

#5

What is the chemical symbol for silver?

Ag
Explanation

Symbol for the element silver on the periodic table.

#6

What is the chemical formula for water?

H2O
Explanation

Molecular formula representing water composed of two hydrogen atoms and one oxygen atom.

#7

What is the hardest natural substance on Earth?

Diamond
Explanation

Hardest known natural material composed of carbon atoms arranged in a crystal lattice.

#8

Which of the following is a semiconductor material?

Silicon
Explanation

Element commonly used in the production of semiconductors due to its electrical properties.

#9

What is the process of changing a liquid into a gas called?

Vaporization
Explanation

Transformation of a substance from liquid to gas phase.

#10

Which of the following is not a state of matter?

Energy
Explanation

Energy is not a state of matter but rather a property of matter and other entities.

#11

What is the chemical name for table salt?

Sodium chloride
Explanation

Compound composed of sodium and chloride ions, commonly known as table salt.

#12

Which element is the primary constituent of organic compounds?

Carbon
Explanation

Element forming the backbone of organic molecules due to its bonding properties.

#13

Which material is known as a superconductor at very low temperatures?

Mercury
Explanation

Metallic element exhibiting superconductivity at extremely low temperatures.

#14

Which of the following is used as a fuel in nuclear reactors?

All of the above
Explanation

Various materials such as uranium, plutonium, and thorium can be used as nuclear reactor fuels.

#15

Which of the following is used as a refrigerant in air conditioners?

Freon
Explanation

Common name for chlorofluorocarbon compounds used as refrigerants.

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