115 Material World – Chemical Change

Artefact and learning description for Chemical Change

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Youtube Video –> http://www.youtube.com/watch?v=0o4b-znF0Sg&feature=youtu.be

Today, I had some chemical and physical change activities. Friends and I had ‘Chemical Popguns’ activity. For this activity, we needed a plastic soft-drink bottle, a cork, vinegar and sodium bicarbonate. Firstly, we pour vinegar into the bottle until it’s one-third full and we gathered two teaspoons of sodium bicarbonate on the paper. Vivien quickly push the cork into the bottle straight after added sodium bicarbonate. What happened? The cork exploded from the bottle and lot of foam flowed out.

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The second activity was ‘Baking Pikelets’. We actually cooked during the lesson and it was a fabulous chemical experiment. Firstly, we mixed with egg, sugar, flour, baking powder and salt, and added milk to form a smooth and thick batter. We heated a frying pan before pour batter on it and we waited until bubbles appear on the surface of each pikelet. When we heated the batter, it was no longer liquid.

Half page reflection for Chemical Change

Matters can change in two ways, which are physical change and chemical change. Teaching children about the chemical and physical changes are considered important, as these are such a relevant part of teaching science in early childhood education. Children would meet changes quite often in their world as soon as they grow up. Actually I was shocked by the fact that the cooking can be the science. During the science lesson, I made pikelets and I saw the process of chemical change, the batters changed into solid, pikelets as I heated and I learnt that this was chemical change, as the change cannot be reversed. However, physical change is usually easy to reverse. For example, melting an ice cube or breaking a bottle is the example of physical change. Teaching chemical and physical change would be exciting as there are variety activities for young children and I am sure that these activities are stimulate children’s curiosity and interest. Teaching this topic to young children would be interesting, and I am excited to give children the chance to explore chemical change and help them learn to understand it. Learning about chemical change can also be made fun and curiosity, getting children involved in activities

Resource for Chemical Change and reason chosen

http://notjustcute.com/2010/06/22/reactions-five-fun-science-activities-that-fizz-foam-and-pop/

In this activity, children place a small amount of baking soda in the balloon and attach the balloon to a small-mouthed bottle with vinegar inside. Lift the balloon up to allow the baking soda to drop into the bottle. “BOOM” The reaction would occur. Through this activity, children were then given the opportunity to explore the knowledge of chemical change. I choose this activity to teach chemical change to young children because the reaction from this activity could provide the concept of chemical change to children. They would be amazed when the balloon was inflated and they would ask what happen, why and how. Through these learning process, children would able to develop their understanding of chemical change.

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