science experiment

Flying rocket experiment

Students had fun today with flying rocket experiment. Conducted this activity to introduce reaction of acid with carbonate.

Add sprite in film canister, to about 3/4.
Add 3 spatulaful of baking soda on the cap.
Place the cap over the film canister and shut it tight.
Invert the film canister.
Step away and watch it launch!

Sprite can be replaced with coke or vinegar.
Baking soda can be replaced with antacid tablet.

What’s happening?
Reaction of acid and carbonate produce carbon dioxide gas. Carbon dioxide produced is trapped in the film canister provide a force for it to propel upwards.

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Simple titration

Conducted a simple titration for a lesson on Acid Rain. Parts of lesson is scenario-based to provide solution for acidic soil.

Level: Sec 2 Normal Technical
Topic: Air Pollution (Effects of Air Pollution – Acid Rain)
Objectives:
Students should be able to:
– test for pH of solution using universal indicator
– test for acidity or alkalinity of solution using pH paper
– conduct simple titration and determine the end-point for neutralisation

Materials:

acid rain – titration activity (student)

acid rain – titration activity (teacher)