Elements Compounds Mixtures Particle Diagrams

How many different types of atoms are there in the following molecule?

• 7

• 6

• 3

• 8

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How are elements and compounds different?

• Compound is represented by a chemical formula, and elements are represented by a chemical symbol.

• Compounds are represented by chemical symbols of one letter, and elements are represented by symbols of two letters.

• Elements are pure substances, and compounds are not.

• Elements are always larger units of matter, and compounds are smaller.

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How many elements are in the compound Fe₂O₃?

• 0

• 1

• 2

• 3

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Hydrogen is considered an element, while hydrogen peroxide is considered a compound. This is because hydrogen peroxide is...

• is used for cleaning wounds.

• made of two different elements.

• is a liquid.

• useful to human beings.

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• Element

• Compound

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• Element

• Compound

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An element consists of how many types of atoms?

• None

• 1

• More than 2

• It depends on the element

Compounds are formed when

• Atoms break apart

• One atom exists

• More than two atoms bond together

• More than two atoms combine

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Mixtures can contain which of the following?

• Elements

• Compounds

• Both elements and compounds

H2O is an example of a

• Element

• Compound

• Mixture

• Atom

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