Acids & Bases pH scale

Compounds form when _______________.

• atoms of one element bond together
• atoms of two or more elements bond together
• molecules of one element are mixed together
• molecules of two or more elements are mixed together

Tags

NGSS.MS-PS1-1

Where on a pH scale is an acid?

What is the pH range of an acid?

• 4-6

• 1-7

• 1-6

• 8-14

Where on a pH scale is it neutral?

Pure water has a pH of 7. Pure water _______.

• is a base
• is a neutral substance
• could be either an acid or a base
• is an acid

Where on a pH scale is an base?

What is the pH range of an base?

• 4-6

• 1-7

• 1-6

• 8-14

Which of the following is true about acids and bases?

• The lower the pH, the stronger the acid
• the higher the pH, the stronger the acid
• The lower the pH, the more neutral the acid
• The higher the pH, the weaker the base

Organize the following:

Groups:

(a) Acid

,

(b) Base

• Turns litmus paper blue

• Food products

• pH less than 7

• Tastes sour

• Feels slippery

• Turns litmus paper red

• Tastes bitter

• pH more than 7

• Usually cleaning products

Organize the following to be either an acid, base, or neutral.

Groups:

(a) Acid

,

(b) Base

,

(c) Neutral

• Battery Acid

• Baking Soda

• Lemon Juice

• Bleach

• Water

• Drain Cleaner

• Stomach Acid