Definitions

Question 1

What is a Strong Acid?

Answer 1

An acid that ionizes completely in water
Eg Sulphuric Acid (H+)

Question 2

What is a weak acid

Answer 2

An acid that only partially ionized in water
Eg Vinegar (H+)

Question 3

What is a Strong Alkali?

Answer 3

A strong alkali fully ionizes in water eg Sodium Hydroxide (H-)

Question 4

What is a weak Alkali?

Answer 4

A weak alkali partially ionizes in water
Eg Ammonium Hydroxide (H-)

Question 5

What are acids?

Answer 5

Acids are proton donors, so when in water, they release (H+)

Question 6

What are Bases?

Answer 6

Bases are proton acceptors which means they release (H+)

Question 7

Reactivity Series

Answer 7

Please Stop Calling Me A Cute Zebra I Like Her Call Smart Goat

Question 8

P, S, C, M, A, C, Z, I, L, (H), C, S, G

Answer 8

Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon, Zinc, Iodine, Lead, (Hydrogen), Copper, Silver, Gold

Question 9

Properties of acids

Answer 9

Sour taste

Question 10

Chemical properties of acids

Answer 10

Reacts with metals to form salt and hydrogen.
Reacts with bases to form salt and water.
Reacts with carbonates to form salt, water and CO2

Question 11

Ionic Precipitation Steps

Answer 11

1. React aq solutions of 2 different salts, each containing half of the ions needed for the insoluble salt.
2. Filter the residue
3. Rinse with distilled water
4. Dry with filter paper or in an oven

Question 12

Titration involves…

Answer 12

Acid + alkali = salt + water

Question 13

Titration Steps

Answer 13

1. Pipette alkali into conical flask
2. Add 2-3 drops of indicator to flask
3. Fill burette with acid using funnel
4. Titrate acid against alkali until indicator changes colour (note the volume)
5. Repeat all steps except 2, using volume from step 4
6. Evaporate to dryness or saturation
7. Rinse with cold water
8. Dry with filter paper