acids & alkalis & chemical reactions

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created 8 years ago by chemistry_goo
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1

A solution with a pH lower than 7

Acid

2

A solution with a PH higher than 7

Alkali

3

A substance which dissolves in water to produce a solution with a pH higher than 7

Base

4

A substance that destroys living tissues on contact

Corrosive

5

a substance that can cause blistering or redness of the skin

Irritant

6

An indicator made from lichens

Litmus

7

Blue litmus turns this colour in the presence of an acid

Red

8

A solution with a pH of 7

neutral

9

A number scale that measures the strength of acids or alkalis

Ph Scale

10

An indicator that changes colour to show whether a solution is neutral, acid or alkali

universal indicator

11

Hydrochloric is an acid or an alkali?

Acid

12

Sodium hydroxide is an acid or an alkali

Alkali

13

Soap is an acid or an alkali?

Alkali

14

Lemon juice is an acid or an alkali?

Acid

15

a change which makes a new substance, e.g. coal burning

Chemical change

16

a change in which no new substance is made. The substance just changes to a different state, e.g. water boilingPhysical

Physical change

17

the reacton when oxygen is added too a substance

Oxidation

18

the reaction which occurs when a substance burns in oxygen giving out heat energy

Combustion

19

a substance made when an acid and a base react together

. A salt

20

when one element takes the place of another in a compound

Displacement

21

solid that is disolved to form a solution

Solute

22

mixture of solute and solvent

Solution

23

solution where the solvent is water

Aqueous Solution

24

a solute that cannot be disolved

Insoluble

25

capable of being dissolved in a solvent

Soluble

26

a change which can be changed back to its original form.

Reversible

27

a change which cannot be changed back from it's original form.

Irreversible