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Examine glassware before using. Do not use chipped or cracked test tubes or
TASK TWO: Dissolving
How much sugar will dissolve in a small amount water?
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In a beaker with 2 – 3 cm of water add a small spoonful of sugar and stir it until it all dissolves.
How many spoonfuls can you add until it will not dissolve anymore?
Look at the picture below:
Which of the ideas do you think would work to dissolve more sugar? Can you think of any ideas of your own?
TASK THREE: Neutralisation
Indicators can be used to find out whether a solution is acid, alkaline or neutral. Universal indicator can be used to find the pH of a solution.
Acid - red, pH less than 7 Neutral - green, pH = 7 Alkali - blue/purple, pH greater than 7
When you react acids with alkalis, a neutralisation reaction takes place. The acid is cancelled out by the alkali.
In a neutralisation reaction, a salt and water are produced.
Describe what happens during a neutralisation reactions, include a description of what happens to the pH during this type of reaction. ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________
TASK FOUR: Solids, liquids and gases
Everything is made up of particles that are too small to see. The three states of matter are SOLID, LIQUID and GAS. They are have different properties due to the arrangement and movement of their particles.
