6th Grade Semester 1 Science Review

While elements and compounds are related, they are different. Unlike elements, compounds -

• consist of only one type of atom

• are the smallest form of a particle

• exist only as pure substances

• are made of at least two types of matter

This picture represents part of the Periodic Table. “Nais called the element’s-

• formula

• name

• symbol

• compound

Which of the following is a compound?

• Water

• Oxygen

• Chlorine

• Aluminum

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NGSS.MS-PS1-1

Which of the following elements is one of the major components of living organisms?

• Sulfur

• Carbon

• Copper

• Silicon

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Look at the given compound.

Be₃Al₂(SiO₃)₆

How many different elements are in the compound? Record your answer

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This table has two columns of different kinds of matter. Which of the following is the best label for the second column?

• Atoms

• Pure substances

• Compounds

• Mixtures

Which of the following is the best description of an element?

• A substance that cannot be broken down into simpler substances

• A naturally occurring mineral made of more than one substances

• A small particle made with a specific chemical composition

• A collection of atoms that have different abilities when joined together

Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is –

• a gas at room temperature.

• made of two different elements.

• given off by green plants.

• useful to human beings.

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NGSS.MS-PS1-1

The smallest particle of any particular type of matter is known by which of the following terms?

• Element

• Chemical

• Atom

• Compound

The oceans are primarily composed of which two elements?

• Carbon and hydrogen

• Calcium and silicon

• Hydrogen and oxygen

• Nitrogen and phosphorus

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