This 9th Grade Chemistry Quiz covered important basics like matter, atoms, elements, compounds, states of matter, and chemical changes. key topics for building a strong chemistry foundation.
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1 What is matter?
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Only liquids
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Only solids
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Anything that has mass and takes up space
Correct!Wrong!Explanation
Matter includes solids, liquids, and gases as long as they have mass and volume.
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2 Which of the following is a pure substance?
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Air
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Oxygen
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Soil
Correct!Wrong!Explanation:
Oxygen is an element made of only one type of atom, so it is a pure substance.
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3 What is the chemical symbol for sodium?
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Na
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S
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So
Correct!Wrong!Explanation
Sodium’s symbol is Na, which comes from its Latin name Natrium.
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4 Which particle has a positive charge?
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Electron
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Neutron
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Proton
Correct!Wrong!Explanation:
Protons are positively charged, electrons are negative, and neutrons have no charge.
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5 What state of matter has a fixed shape and fixed volume?
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Liquid
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Gas
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Solid
Correct!Wrong!Explanation:
Solids keep their shape and volume because their particles are tightly packed.
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6 Which change is a chemical change?
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Melting ice
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Burning wood
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Freezing water
Correct!Wrong!Explanation:
Burning creates new substances like ash and gas, making it a chemical change.
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7 What is an atom?
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A group of molecules
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The smallest unit of an element
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A type of compound
Correct!Wrong!Explanation:
Atoms are the basic building blocks of elements.
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8 Which of the following is a compound?
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Oxygen
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Iron
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Water (Hâ‚‚O)
Correct!Wrong!Explanation:
Water is made of two different elements hydrogen and oxygen, chemically combined.
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9 What happens to atoms during a chemical reaction?
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They disappear
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They rearrange to form new substances
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hey are destroyed
Correct!Wrong!Explanation:
Atoms are not created or destroyed; they rearrange to form new compounds.
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10 Which laboratory tool is used to measure liquid volume?
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Thermometer
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Balance
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Graduated cylinder
Correct!Wrong!Explanation:
A graduated cylinder is designed to accurately measure liquid volumes.
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