Chemistry- Acids, mostly

Question 1

What is the reactivity series of metals?

Answer 1

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Zinc
Iron
Copper
Silver
Gold

Question 2

What is the base acid reaction when you react a metal oxide with an acid?

Answer 2

Acid + Metal oxide -> Salt + water

Question 3

What is the base acid reaction when you react a metal with an acid?

Answer 3

Acid + Metal -> Salt + Hydrogen

Question 4

What do you get if you react a metal hydroxide with an acid?

Answer 4

Acid + Metal hydroxide -> salt + water

Question 5

What do you get if you react a metal carbonate with an acid?

Answer 5

Acid + metal carbonate -> salt + water + carbon dioxide

Question 6

What colours can Phenolphthalein be?

Answer 6

Colourless acid, colourless neutral, pink alkali

Question 7

What colours can Methyl orange be?

Answer 7

Red in acid, Yellow in alkaline

Question 8

What is galvanising?

Answer 8

It is where you make zinc get oxidised instead of the iron.

Question 9

How do you test for oxygen?

Answer 9

Relight a glowing splint

Question 10

How do you test for hydrogen

Answer 10

Make a squeaky pop when a lit splint is placed over a container full of hydrogen.

Question 11

Test for chlorine:

Answer 11

Chlorine bleaches damp litmus paper, turning it white. It doesn’t matter if it is red or blue litmus paper.

Question 12

Test for CO2

Answer 12

Turns limewater cloudy

Question 13

Test for ammonia

Answer 13

Turns damp red litmus paper blue

Question 14

Test for water

Answer 14

Copper(II) sulfate crystals can be used as a test for water, when blue, the salt is hydrated, and when white it is anhydrous.
Pure water will always boil at 100C and freeze at 0C