Counting Atoms

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What is an element in chemistry?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is made up of atoms that have the same number of protons.

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There are 3 elements: Hydrogen (H), Sulfur (S), and Oxygen (O).

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What is a molecule?

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A molecule is a group of two or more atoms bonded together. Molecules can consist of the same or different types of atoms.

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What is a compound?

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A compound is a substance formed when two or more different elements are chemically bonded together.

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There are 6 atoms of Carbon.

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What does the subscript in a chemical formula indicate?

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There are 3 more Oxygen atoms than Magnesium atoms.

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What is the chemical formula for water?

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What is the difference between a mixture and a compound?

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A mixture is a combination of two or more substances that are not chemically bonded, while a compound is formed when substances are chemically bonded.

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There are 6 atoms in total: 4 Hydrogen atoms and 2 Oxygen atoms.