Properties of Acids and Bases•Acids •Bases

•Taste sour •Taste Bitter

•Turns blue litmus paper red •Turns red litmus paper blue

•Reacts with metals •Produces Hydroxide ions (OH-) in water

•Produces Hydrogen ions (H+) in water

•Feels Slippery

•Reacts with carbonates to produce CO2 gas

Acid, Base, Neutral, or Both (Acid and Base)

1. pH of 7 _______________________________2. ammonia _____________________________3. fluid in the stomach ____________________4. produces hydrogen gas __________________5. NaOH or KOH _________________________6. saliva in the mouth ______________________7. conduct electricity ______________________8. pH 0 – 6.9 ______________________________9. vinegar ________________________________10. pH 7 - 14 ______________________________11. HCl ___________________________________12. produce ions in water ______________________

Answers1. neutral 10. base2. base 11. acid3. acid 12. both4. acid5. base6. neutral7. both8. acid9. acid

Vocabulary1. An ________ is a compound that changes

color in the presence of an acid or base.2. This property of an acid can “eat away”

certain metals_____________3. The ________ is a series of numbers that

indicates the concentration of hydrogen ions in a solution.

4. A _______ is an ionic compound that forms from the reaction of an acid and a base.

5. At a pH near ________ stomach enzymes break down proteins.

6. During the neutralization process _______ and ________ is produced.

7. The process that breaks down complex molecules of food into smaller molecules is called________.

8. ____________ is the reaction between an acid and a base.

9. _________ digestion is a physical process in which large pieces of food are torn and ground into smaller pieces.

10. Most chemical digestion is completed in the ___.

Vocabulary Answers1. indicator2. corrosive3. pH scale4. salt5. 2 (two)6. salt and water7. digestion8. Neutralization9. Mechanical10. small intestines

pH ScaleRange 0 – 14Acids 0 – 6.9 (lower the number, stronger the acid)Bases 7.1 – 14 (higher the number, stronger the base)Neutral 7

Acid / Base Reactions Acids in water produce?

1. HCl

Bases in water produce?2. NaOH

Acids and bases (neutralization) produce?3. HCl + NaOH

Acid / Base Reaction Answers

1. H+ + Cl-

2. Na+ + OH-

3. H2O + Na+ + Cl-

More Practice!HCl + KOH HF LiOH HF + LiOH HBr KOH HCl + LiOH

AnswersHCl + KOH KCl + H2OHF H+ + F-

LiOH Li+ + OH-

HF + LiOH LiF + H2OHBr H+ + Br-

KOH K+ + OH-

HCl + LiOH LiCl + H2O