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# 1
Pilihan ganda
What is an element?
- A substance made of one type of atom
- A mixture of compounds
- A combination of molecules
- A compound of different substances
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Berurutan
Element, compound, mixture
15
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# 2
Pilihan ganda
Which of the following is a compound?
- Oxygen (O2)
- Water (H2O)
- Gold (Au)
- Helium (He)
# 3
Pilihan ganda
What is a molecule?
- A group of atoms bonded together
- A single type of atom
- A large collection of elements
- A type of mixture
# 4
Pilihan ganda
Which of the following best describes an atom?
- The smallest unit of a chemical element
- A large molecule
- A collection of compounds
- A type of mixture
# 5
Pilihan ganda
What is a mixture?
- A combination of two or more substances that are not chemically bonded
- A pure chemical element
- A single molecule
- A chemical compound
# 6
Pilihan ganda
Which of the following is an example of a mixture?
- Saltwater
- Carbon dioxide
- Diamond
- Iron
# 7
Pilihan ganda
What distinguishes a compound from a mixture?
- Compounds have elements chemically bonded; mixtures do not
- Compounds contain only one element; mixtures contain many
- Compounds are always gases; mixtures are solids
- Compounds cannot be separated; mixtures can be
# 8
Pilihan ganda
Which of the following is a characteristic of elements?
- Elements cannot be broken down into simpler substances
- Elements are always liquid
- Elements are made from two or more types of atoms
- Elements change their properties when mixed
# 9
Pilihan ganda
How are molecules related to compounds?
- Compounds are molecules that consist of two or more different elements
- Molecules are always larger than compounds
- Compounds and molecules are the same
- Molecules cannot form compounds
# 10
Pilihan ganda
What happens when a compound is formed?
- Atoms of different elements bond together
- Elements remain separate
- Atoms of the same element combine
- A mixture is created
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