Monday, September 15, 2014

Science Physical and Chemical Changes

Physical Changes:

1. Breaking a glass
When I broke the glass, the shape of it changed. I realized that the break did not affect it's chemicals. 

2. Tearing  paper
The shape of the paper has changed. It did not not affect the chemicals in the paper. 

3. Molding clay
When I squashed the clay, I could have molded it into any SHAPE or size... so it affected the shape and size of the clay. They chemicals have not been interfered with. 


Chemical Changes:

1. Cooking (raw) food
The chicken strip was added into hot oil. The chicken gets cooked;  which kind of means that the chemicals are also getting cooked... which is a chemical change. The shape of the chicken strip was not affected. 

2. Photosynthesis 
The inside of plants change, the chemical reactions inside make the plant grow more and more each time it receives sunlight. The shape of the plant can also expand; but that wouldn't happen unless photosynthesis happened. 

3. Combining vinegar and baking soda :P
When Ii combines vinegar and baking soda, it created a totally different substance. The chemicals reacted really quickly to each other.

< Sayuri >

2 comments:

  1. I loved your ideas. They are both smart and creative. I could have never thought of the changes that you said. Good Job

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  2. i think your ideas were good and all of the things were in the right places. they were also very creative so it was really good

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