Neutralisation
Tonight in science we are doing a experiments called neutralisation. We are using universal indicator, Hydrochloride Acid, Sodium Hydroxide.
- by changing colour
The PH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic
Blue ---- Green ---- Red = pH scale
Acid ------Neutral-----Base
- by changing colour
The PH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic
Blue ---- Green ---- Red = pH scale
Acid ------Neutral-----Base
Universal indicator - use to measure acids and bases.
Universal Indicator - Shows if acid or base
-All acids contain hydrogen ions and they release them in water.
*Hydrochloride Acid - What is an acid?
- it is capable of corroding and dissolving a substance.
*Sodium Hydroxide - What is a base?
- A substance that, in aqueous, release hydroxide
*What is a Neutralisation reaction?
- When an acid reacts to a base react to form water and salt and involves the combination.
Experiment:
Explanation: We mixed other bases of Acids and find out the colours
Green - Sodium Hydroxide + Universal Indicator + Hydrochloride Acid
Red - Hydrochloride Acid + Universal Indicator + Sodium hydroxide
Orange - Hydrochloride Acid + Universal Indicator
Blue - Sodium Hydroxide + Universal Indicator
Light Blue -Sodium Hydroxide + Universal Indicator + Sodium Hydroxide
Well done Subnesh! You have included some great images :) There are few places where you have muddled the colours- remember RED= Acid, BLUE= Base. Why did the combinations of chemicals make different colours (how come the blue was blue, why did the red form?)
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