CH-003: CHAPTER 6 + 7

What chemicals have aqueous solubility?

1. Sodium salts & hydroxides

2. Potassium salts & hydroxides

3. Ammonium salts

4. Acetates

5. Nitrates

6. Barium hydroxides

7. Most halides and sulfates

What chemicals DON’T have aqueous solubility?

1. most carbonates

2. most hydroxides

3. most phosphates

4. most sulfides

5. barium

6. calcium

7. lead (ii)

8. mercury (i)

9. strontium

10. silver (i)

What are the reactants of organic combustion?

hydrocarbon + oxygen

What are the products of organic combustion?

carbon dioxide + water

What is corrosion?

metal + oxygen → metallic oxide

What is precipitation?

a solid forms from dissolved substances

What are the products of acid-base neutralization?

salt + water

What are the products of an acid-metal reaction?

salt + H2

What are oxidation-reduction reactions?

A chemical reaction involving the transfer of electrons from one species to another.

What are the four signs of a chemical reaction occurring?

1. Change in color

2. Formation of a solid (precipitate)

3. Formation of bubbles (gas formation)

4. Heat is absorbed or released (endo/exothermic)

What does a net ionic equation represent?

The ions from the reactants and products that undergo a change

What are spectator ions?

Ions in a chemical equation that do not undergo change

What happens during an oxidation-reduction reaction?

The transfer of electrons between species occurs

What happens to the electrons during oxidation/oxidizing agent?

Electrons are lost

What happens to the electrons during reduction/reducing agent?

Electrons are gained