ISAT PreparationISAT Preparation

ChemistryChemistry

Acids, Bases, and pHAcids, Bases, and pH

VocabularyVocabulary

AcidAcid

BaseBase

pHpH

pH scalepH scale

NeutralizationNeutralization

ChemistryChemistry

Matter will either be an acid, a base, or Matter will either be an acid, a base, or neutralneutral

Acid – A solution that has an excess of H+ Acid – A solution that has an excess of H+ ionsions

Acids have a sour tasteAcids have a sour taste

They can also corrode or react with metalsThey can also corrode or react with metals

ChemistryChemistry

ChemistryChemistry

Base – a solution that has an excess of Base – a solution that has an excess of OH- ionsOH- ions

Bases have a slippery or slimy feelBases have a slippery or slimy feel

Bases have a bitter tasteBases have a bitter taste

Bases are corrosive to skinBases are corrosive to skin

Solutions that are neither an acid or a base Solutions that are neither an acid or a base is considered neutralis considered neutral

ChemistryChemistry

ChemistryChemistry

pH – stands for potential of hydrogenpH – stands for potential of hydrogen

pH Scale – used to measure if a solution is pH Scale – used to measure if a solution is an acid, a base, or neutralan acid, a base, or neutral

1-6 acid1-6 acid 7 neutral 7 neutral 8-14 base8-14 base

Neutralization – where an acid is mixed Neutralization – where an acid is mixed with a base to make the final product with a base to make the final product neutralneutral

ChemistryChemistry

ChemistryChemistry

ChemistryChemistry

1.1. What are the characteristics of an acid? What are the characteristics of an acid? A base?A base?

2.2. What does pH measure?What does pH measure?

3.3. What is neutralization?What is neutralization?

4.4. What contains a lot of H+ ions?What contains a lot of H+ ions?

ChemistryChemistryAcids and BasesAcids and Bases

Materials: 1 beaker, 2 test tubes, a test Materials: 1 beaker, 2 test tubes, a test tube rack, litmus strips, vinegar, baking tube rack, litmus strips, vinegar, baking soda solutionsoda solution

Measure the pH of the vinegar solution.Measure the pH of the vinegar solution.

Measure the pH of the baking soda Measure the pH of the baking soda solution.solution.

Mix the two together and then measure the Mix the two together and then measure the pH of the final solution.pH of the final solution.