Neutralisation Test

Question 1

What is neutralisation reaction

Answer 1

“A neutralisation reaction is where an acid reacts with an alkali to produce a neutral solution of a salt and water. Acid plus alkali equals salt plus water

Question 2

What are alkalis

Answer 2

“Alkalis are soluble metal hydroxides e.g. sodium hydroxide, calcium hydroxide and potassium hydroxide”

Question 3

Hydrochloric acid will make

Answer 3

Chloride

Question 4

Nitric acid will make

Answer 4

Nitrate

Question 5

Sulfuric acid will make

Answer 5

Sulfate

Question 6

What are bases

Answer 6

“Bases are substances that react with acids and neutralise them.”

Question 7

Acid+base equals

Answer 7

Salt+water

Question 8

What is the difference between copper oxide and sodium hydroxide

Answer 8

They are both bases and will react with acids to neutralise the, but copper oxide is not and alkali because it does not dissolve water whereas sodium hydroxide does

Question 9

Why are bases often used as household cleaners

Answer 9

They react with oils and fats

Question 10

Give examples of things that contain sodium hydroxide

Answer 10

Drain cleaners and oven cleaners

Question 11

What are weak bases and alkalis found in

Answer 11

“toothpaste, antacid tablets (to help cure an upset stomach) and baking powder.
”

Question 12

What is the test for hydrogen gas

Answer 12

Place a splint in the gas and hydrogen will burn with a pop

Question 13

Titration apparatus

Answer 13

Clamp stand, burette and titration stand

Question 14

What is the test for carbon dioxide

Answer 14

Bubble the gas through limewater and it should go from colourless to cloudy

Question 15

What is an indicator

Answer 15

Is a chemical that gives a colour change in acidic, alkaline and neutral solutions.

Question 16

What colour is litmus paper in acid

Answer 16

Red

Question 17

What colour is litmus paper in alkali

Answer 17

Blue

Question 18

What does universal indicator do

Answer 18

“show us exactly how strongly acidic or alkaline a solution is.”

Question 19

What is indigestion

Answer 19

“Indigestion, also known as dyspepsia, is pain or discomfort in your chest or stomach. ”

Question 20

What causes indigestion

Answer 20

“Indigestion is caused by stomach acid coming into contact with the sensitive, protective lining of the digestive system. The stomach acid breaks down the lining, leading to irritation and inflammation ”

Question 21

What helps indigestion

Answer 21

Antacids

Question 22

What is a hypothesis

Answer 22

“A prediction of what you think is going to happen in the reaction
”

Excerpt From
Year 10 Chemistry
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Question 23

Independent variable

Answer 23

“What you are going to change

”

Question 24

Dependant variable

Answer 24

“What you are going to measure
”

Question 25

Controlled variable

Answer 25

“What you will keep the same”

Question 26

Rennies or burpese test

Answer 26

“Crush a Rennies tablet using a mortar and pestle. Weigh 1g of the Rennies powder in a conical flask.
Add 10cm3 water and 4 drops of screened methyl orange to the flask.
Measure 20 cm3 of hydrochloric acid into a measuring cylinder and add the acid to the conical flask drop wise, using a dropper pipette.
When the indicator changes to a pink colour for at least 1 minute, note how much acid was required to carry out the neutralisation.
Weigh 1g of Burpease powder and repeat steps 1-4.”

Question 27

Apparatus for burpese and rennies test

Answer 27

Measuring cylinder
Dropped pippete
Mass balance
Pestal and mortar
Conical flask