S8P1a Practice Quiz

True or False: elements AND compounds are pure substances.

• True

• False

Which term best described a mixture that does not have a uniform composition?

• heterogeneous

• homogenous

• compound

Which term best describes a mixture when substances are physically combined in a uniform composition?

• heterogeneous

• homogeneous

• compound

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

• heterogeneous

• homogeneous

• pure

Which of these is an element?

• Salt (NaCl)

• Water (H20)

• Oxygen (O)

• Carbon Dioxide (CO2)

Air is:

• An element

• A compound

• A mixture

• A pure substance

Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?

• The salad and fruit drink are both mixtures.
• The salad and the fruit drink are both solutions.
• The fruit drink is a mixture because the ingredients can't be separated.
• The salad is a solution because the ingredients can't be separated.

What is the smallest unit of matter?

• atom
• element
• molecule
• compound

Tags

NGSS.MS-PS1-1

Which of the following is classified as a pure substance?

• Lemonade

• Salt water

• ketchup

• Helium

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Tags

NGSS.MS-PS1-1