Compounds

A substance made up of two or more chemically combined elements is —

• an element

• mixture

• compound

• solution

Table salt, or sodium chloride has the chemical formula NaCl. How is sodium chloride classified?

• as an element

• . as a compound

• as a mixture

• as a liquid

A pure substance...

• is an element or a compound

• is an element or a mixture

• is a compound or a mixture

• is a mixture

Which compound is best represented by this particle diagram?

• NH₃

• H₂O

• CH₄

• HCl

Tags

NGSS.MS-PS1-1

Which compound is best represented by this particle diagram?

• C₂H₆

• C₆H₁₂O₆

• CO₂

• NaCl

Tags

NGSS.MS-PS1-1

How many total atoms are in K₂SO₄

• 7

• 2

• 4

• 3

Tags

NGSS.MS-PS1-1

How many types of atoms are in K₂SO₄

• 7

• 3

• 2

• 4

Tags

NGSS.MS-PS1-1

What is a substance made of two or more elements that are chemically combined called?

• A. element

• B. compound

• C. mixture

• D. solution

What is the definition of a compound?

• The smallest part of any substance which can exist on its own

• Two or more atoms chemically joined together (can be the same or can be different)

• A simple substance in which all the atoms are identical

• Two or more different elements chemically joined together

This picture represents which of the following?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1