Acids, Alkalis, Neutralisation, Salts

Question 1

Acids

Answer 1

A solution with a ph level of less than 7

Question 2

Alkali

Answer 2

• soluble base
• ph level more than 7
• chemically opposite to acids

Question 3

Corrosive

Answer 3

-when a substance can burn you skin or eyes

Question 4

Concentrated

Answer 4

-solution that has a large number of solute/acid particles per unit volume

Question 5

Dilute

Answer 5

Solution that has a few solute/acid particles per unit volume

Question 6

Strong acids

Answer 6

-can wear away materials

Question 7

Caustic

Answer 7

• able to burn skin

- damage other materials

Question 8

Neutral substance

Answer 8

-not acidic or alkaline

Question 9

pH

Answer 9

Amount of hydrogen

Question 10

pH 0-6

Answer 10

Acidic

Question 11

pH 7

Answer 11

Neutral

Question 12

pH 8-14

Answer 12

Alkaline

Question 13

Universal indicator or litmus paper colours

Answer 13

• acids turn red
• alkali turn blue
• neutral turns green

Question 14

Indicator

Answer 14

Substance that changes colour to show whether a solution is acidic or alkaline

Question 15

Litmus paper

Answer 15

-An indicator

Question 16

Universal indicator

Answer 16

-indicator of pH level

Question 17

pH scale

Answer 17

It shows whether a substance is acidic, alkaline or neutral

Question 18

Neutral

Answer 18

• solution that is neither alkaline or acidic

- pH 7

Question 19

Base

Answer 19

-substance that can neutralise an acid
- makes products salt + water
-

Question 20

Neutralisation

Answer 20

-reaction where an acid cancels out a base

Question 21

Equation for neutralisation

Answer 21

Acid + base -> salt + water

Question 22

Salt

Answer 22

Compound formed when an avid reacted with a metal/ compound

Question 23

Nitric acid makes which salt

Answer 23

Nitrate

Question 24

Sulphuric acid makes which salt

Answer 24

Sulfate

Question 25

Hydrochloride acid makes which salt

Answer 25

Chloride

Question 26

Salt definition in terms of atoms

Answer 26

-compound made when hydrogen atoms of an acid are replaced by atoms of a metal element

Question 27

Metal and acid makes

Answer 27

- salt | - hydrogen

Question 28

How to make copper sulfate crystals

Answer 28

1- add copper oxide to dilute sulfuric acid 2- filter to remove any excess copper oxide 3- heat copper sulfate solution to evaporate water 4-leave in warm place for crystals to develop