Matter review

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

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What are the two main types of matter?

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The two main types of matter are substances and mixtures.

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What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

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

Front

What is the difference between an element and a compound?

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An element consists of only one type of atom, while a compound consists of two or more different types of atoms.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a compound using symbols for the elements and numbers to indicate the ratio of atoms.

Front

What does the subscript in a chemical formula indicate?

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The subscript indicates the number of atoms of the element in the compound.

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What are reactants in a chemical reaction?

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Reactants are the starting substances that undergo a chemical change.

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What are products in a chemical reaction?

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Products are the substances formed as a result of a chemical reaction.

Front

How many atoms are in a molecule of water (H2O)?

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A molecule of water contains 3 atoms: 2 hydrogen atoms and 1 oxygen atom.