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Thursday, 15 June 2017

Chemical Fizz


Wahlt
To observe & measure the chemical reaction between an acid and a base.

Chemical reactions involve the release of heat energy (exothermic) or the absorption of heat (endothermic). When reactants in this experiment meet, the temperature drops.
Other forms of energy can also be detected as the experiment proceeds. If you can hear anything, then sound energy is at work. Look foe movement this is kinetic energy.


Materials
measuring spoon or beaker
large measuring cylinder
5 ml Bicarbonate of soda (baking soda)
50 ml Vinegar

Hypothesis
When Bicarbonate of soda (base) and vinegar (acid) are mixed together, I think the mixture will fizz & increase towards the top.
Starting Volume: 55 ml
End Volume: 500 ml

Method
Carefully put 5 ml dry Bicarbonate of soda in a measuring cylinder.
Add 50 ml vinegar

Result:
The reaction was rapid (quick) and as it died down I could see the bubbles (foam) disappearing and the colour changed to a light brown.

Hypothesis:
My hypothesis was valid because I guessed the accurate amount for the ending volume and because if you add the right amount the Bicarbo
nate of soda & vinegar creates a chemical reaction.

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