Endothermic!

My partner and I discussing about Endothermic!

Technicraft Wk 7

Plan:

• Vineger
• Baking Soda
• Bottle
• Funnel
• Beaker

Writing:

Science today was based around experimenting how endothermic works.

This experiment involved vineger, baking soda, a bottle, a funnel, balloon and beaker. The first step was to stretch the balloon so that its stretch enough so that it can be put onto bottle. ( Balloon is made out of Polychloroprene ) ( Polychloroprene is a chemical stability and maintains flexibility over a wide temperature. ) The second step was that we use the funnel to pour in the baking soda and while the other person pour the vineger into the bottle. While that was done, take it outside and wrap the balloon. Next put the balloon upright so that all the baking soda tips into the bottle.

Observation shows that the  vineger and baking soda mix turn into a brown colour which it filled up the balloon. The Observation shows that people can hear sizzling fizz sound and you can feel it was cold.

That is ENDOTHERMIC.

Technicraft Wk4!

Science today was based around experimenting how heat can create bubbles. This experiment involved golden syrup, test tubes, a test tube rack, test tube holder, methylated spirits, matches, a dish and damp cloth. The first step was to put the test tube upside down and observe the golden syrup. The golden syrup slowly came down the test tube.

The next step was to waft the smell of the golden syrup and the intensity of the smell was minimum.

The third step was to put the bottom of the test tube where our armpits are  and hold it for 1 minute and then take it out to observe. The golden syrup was coming down a bit faster and the intensity of the smell was increasing. The next step is the dangerous part because we had to use the methylated spirit to create heat. Then put the testing tube above it. Well it's above the flame, twirled it a round and you can see it bubbling, that means it starting to boil. The intensity of the smell was at the maximum point where it had a strong smell.

After that step, people could eat the golden syrup after it cooled down. That experiment is about creating bubbles with heat instead of using air to create bubbles.