Acids and Bases

pH is the measure of the concentration of ______.

• Acids

• H+ ion

• OH- ion

• Bases

According to Arrhenius, what is the definition of an ACID?

• a substance that contains hydroxide and ionizes to produce OH-

• a substance that contains hydrogen and ionizes to produce H+

• a substance that contains hydrogen and ionizes to produce OH-

• a substance that contains hydroxide and ionizes to produce H+

NaOH is:

• an Arrhenius base

• an Arrhenius acid

• neither an acid nor a base

• both an acid and a base

A substance that is 3 on the pH scale would be a(n):

• acid

• base

• neutral

• solute

A substance that changes color when mixed with an acid or base is a(n) ___.

• indicator
• neutralizer
• corrosive
• electricity

Bases are located where on the pH scale?

• any number can be a base
• below 7
• above 7
• number 7 is a base

According to the pH scale, which item is more acidic than lemons?

• battery

• vinegar

• milk

• blood

According to the pH scale, which item is a stronger base than soap?

• baking soda

• ammonia solution

• tomato

• bleach

Neutralization reactions

• formed from joining positive and negative ions 
• increases OH ions
• froms a salt and water
• increases H2O ions

Tags

NGSS.MS-PS1-5

If you added universal indicator to vinegar, what colour would it turn

• blue

• green

• yellow

• red