Title: Neutralisation What do you think happens when an

acid and an alkali are mixed?

?Write an idea in

your book!

Stretch: People put vinegar on wasp stings.Looking at our title and what we were learning

last lesson, suggest why!?

The chemical reaction between an acid and an alkali is called neutralisation.

acid alkali a salt water

pH 7You need to remember this!!

I’ll be testing you!!

LO: Describe a neutralisation reaction

Level 4Describe how to make a neutral solution

Level 5Describe a neutralisation reaction using a

simple word equation Level 6

Explain a SPECIFIC neutralisation reaction using a word equation

What is neutralisation?

What number is neutral on

the pH scale?

What colour is a neutral solution with universal

indicator?

How do you achieve a neutral

solution?

Can you give an example of where

neutralisation is used in everyday life.

Do you remember the word equation?

Make a mega fact mind-map on neutral solutions 7 Minutes

Stretch: Make these words into a

neutralisation equation:

WaterSodium HydroxideSodium chloride

Hydrochloric acid +, +,

What is neutralisation?

What number is neutral on the pH

scale?pH7

What colour is a neutral solution with universal

indicator?GREEN

How do you achieve a neutral solution?

By adding an acid and an alkali together

Give an example of where neutralisation is used in everyday

life.-Fertilizer

-Bee and wasp stings-Antacid tablets

Do you already know a word

equation?Acid + Alkali Salt + Water

Stretch:Hydrochloric acid + Sodium hydroxide

Sodium Chloride + water

PUT GOGGLES ON 1. Add a couple of drops of

universal indicator to the NaOH (Alkali) in the test tube

2. Use the pipette and carefully DROP BY DROP add the acid to

the alkali.4. Swirl the test tube as you do this

5. STOP when the solution goes green

6. Record how much acid it took to neutralise the alkali in your table.

EquipmentPerson 11. 10cm3

measuring cylinder2. Test tube rack with test tubes of

alkaliPerson 23. Pipette

4. Small beaker of HCl

5. Goggles

I am looking for THE BEST neutral solution!!

WHO CAN GET THE BEST GREEN?

Level 6 Hard Stuff!!How do we know how to write word equations

for SPECIFIC neutralisations?

Hydrochloric Acid + Sodium Hydroxide Sodium Chloride + Water

The Acid!The acid makes the

last name of the salt!

The AlkaliThe first part of the salt’s name is the same as the first part of the ALKALIS

name.

The salt!First part is the same as the

alkali’sSecond part comes from the

acid!

NEWS FLASH!!A LORRY CARRYING CONCENTRATED ACID HAS OVERTURNED AND BLOCKED THE ROAD- ACID

IS EVERYWHERE!

Stretch: Hard word equations!Come and get a sheet and have a go for the scientific edition of the newspaper!

Write a news report for The Metro on this story!!!You must include:

Level 4- How could the fire service neutralise the acid

- How could the Fire Service use indicators to show the strength of the acid?

Level 5-Explain how neutralising the acid works with an equation!

EXTRAS:Why was the acid spill so dangerous?

What hazard symbol might be on the lorry?

Switch metro articles with the person next to you!!

What level did they reach?

Did they include?Level 4

- How could the fire service neutralise the acid- How could the Fire Service use indicators to show

the strength of the acid? Level 5-

Explain how neutralising the acid works with an equation!

EXTRAS: (Level 5+)Why was the acid spill so dangerous?

What hazard symbol might be on the lorry?

LO: Describe a neutralisation reaction

Level 4Describe how to make a neutral solution

Level 5Describe a neutralisation reaction using a

simple word equation Level 6

Explain a SPECIFIC neutralisation reaction using a word equation

Can you think of a keyword from today’s lesson?

Write it on your post-it but DON’T LET ANYONE SEE

Now stick it on the head of the person to your left.

Now ask people on your table to describe the word to see if you can guess it!