Elements, Compounds, and Chemical Changes Practice Test

What is an element?

• The smallest form of matter.

• A combination of atoms.

• A creation of a chemical reaction.

• A Nucleus

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NGSS.MS-PS1-1

What is a compound?

• A molecule made of combined elements.

• A periodic element.

• A metal

• Made from just one element.

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NGSS.MS-PS1-1

How many elements are in this formula. NaCl

• 1

• 2

• 3

• 4

How many elements are in this formula. H₂O

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

How many elements are in this formula? CO₂

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

How many elements are in this formula? CaCO₃

• 2

• 3

• 4

• 5

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NGSS.MS-PS1-1

What is the difference between a compound and an element.

• Elements are made of 2 different parts and a compound is made of one.

• Elements are made from parts of the periodic table and the Compounds are found on the periodic table.

• Elements are found on the periodic table and compounds are made of different elements bonded together.

• Elements are found on the periodic table, and compounds are found at the bottom of the table.

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NGSS.MS-PS1-1

How many elements are in the formula. CH₄

• 2

• 3

• 4

• 5

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NGSS.MS-PS1-1

Which of these is a single element?

• NaCl

• H₂

• CO₂

• CO

What is the name(s) of the elements in the compound NH₄ ?

• Nitrogen, Hydrogen

• Nitrogen, Helium

• Ammonia

• Sodium, Helium

Tags

NGSS.MS-PS1-1