Unit 3 T1 - Pure Substance, Mixtures, and pH Scale

How many different elements are there in a compound?

• 0

• 1

• 2 or more

• -1

Tags

NGSS.MS-PS1-1

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

Ocean water is only slightly basic. What might its pH value be?

• 5

• 8

• 12

• 2

Which has a pH below 7?

• Acid
• Base

What pH is the strongest base?

• 1

• 7

• 4

• 14

if you add an acid to a base what will happen?

• BOOM

• it will neutralize

• it wont mix

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A pure substance can be either an element or a ______________. 

• single substance
• hot mess 
• Complex 
• compound 

Mayonnaise

• Homogeneous

• Heterogeneous

Italian dressing

• Homogeneous

• Heterogeneous

Mixtures are either heterogeneous or homogeneous.

• True

• False