Acids & alkalis

Question 1

What colour does the litmus paper turn when it’s an acid

Answer 1

Red

Question 1

What paper do you use when finding out if something is an acid/ alkali

Answer 1

Litmus paper

Question 2

What colour does the litmus paper turn when it’s an Alkali

Answer 2

Blue

Question 3

What veg do u use to make a good indicator

Answer 3

Red cabbage

Question 4

What happens when a acid an alkali touch

Answer 4

Neutralisation

Question 5

Alkali on a ph scale

Answer 5

8-14

Question 6

Acid Ona ph scale

Answer 6

1-6

Question 7

What is a independent factor

Answer 7

What u change

Question 8

What is a dependent factor

Answer 8

What u will measure

Question 9

What is a control variable

Answer 9

All the factors you keep the same

Question 10

Give an example of neutralisation

Answer 10

Fruit acid burns ur tounge so u would drink milk

Question 11

What is a compound

Answer 11

a thing that is composed of two or more separate elements; a mixture.

Question 12

What is an element

Answer 12

a substance that cannot be broken down into any other substance

Question 13

Name 3 properties of metal

Answer 13

Shiny, high density, good conductor of heat

Question 14

Put in order how reactive these metals are magnesium, zinc,iron,tin, copper

Answer 14

1. Magnesia (most reactive)
2. Zinc
3. Iron
4. Tin
5. Copper (least reactive)

Question 15

What is a displacement reaction

Answer 15

Replacing a less reactive metal with a more reactive metal one in a compound

Question 16

What happens when u add acid to a base

Answer 16

Acid + Base ➡️ salt +water

Question 17

What happens when u add acid to a metal

Answer 17

Acid + metal ➡️ salt + hydrogen

Question 18

What happens when u add acid to a metal carbonate

Answer 18

Acid + metal carbonate ➡️ salt + carbon dioxide + water