Elements and Compounds Practice

Which of the following is an example of an element?

What does a chemical formula represent?

• The number of atoms in a molecule

• The types and numbers of atoms in a substance

• The physical state of a substance

• The color of a substance

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

Tags

NGSS.MS-PS1-1

What is the chemical symbol for sodium?

• S

• Na

• So

• Sd

Which of the following statements is true about elements?

• Elements are made up of only one type of atom.

• Elements are made up of two or more types of atoms.

• Elements can be broken down into simpler substances by chemical means.

• Elements always exist as molecules.

Which of the following best describes a molecule?

• A single atom of an element

• Two or more atoms chemically bonded together

• A mixture of different substances

• A physical change in matter

Tags

NGSS.MS-PS1-1

Which of the following is a correct chemical formula for a compound?

Tags

NGSS.MS-PS1-1

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-1

Which of the following pairs correctly matches an element and a compound?

Tags

NGSS.MS-PS1-1

If a substance is made of only one kind of atom, what is it called?

• Compound

• Mixture

• Element

• Solution