Elements, Compounds, and Mixtures

Which of the above figures best illustrates a pure substance?

• figure W & X

• figure W & Y

• figure Z & X

• figure Z & W

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Which of the above figures best represents an element?

• figure W

• figure X

• figure Y

• figure Z

Tags

NGSS.MS-PS1-1

Which of the figures above best represents a compound?

• figure W

• figure X

• figure Y

• figure Z

Tags

NGSS.MS-PS1-1

When magnesium (Mg) metal is burned in the presence of oxygen gas (O₂), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different from the individual properties of magnesium and oxygen because magnesium oxide is

• a solution

• a mixture

• a compound

• an element

Tags

NGSS.MS-PS1-1

All of the following are pure substances except…

• water (H₂O)

• air

• table salt (NaCl)

• table sugar (C₆H₁₂O₆)

Tags

NGSS.MS-PS1-1

What is another name for a solution?

• homogeneous mixture

• heterogeneous mixture

• substance

• compound

A substance in which two or more elements are chemically combined is called a(n)

• substance

• element

• compound

• mixture

If a substance consists of only one kind of atom, it is a(an)

• Mixture

• Solution

• Compound

• Element

A teaspoon of sugar stirred into a glass of water would be considered which type of mixture?

• heterogeneous

• homogeneous

• compound

• element

What is matter classified as?

• compounds and mixtures

• mixtures and pure substances

• elements and mixtures

• solutions and colloids