Monday, September 15, 2014

Physical & Chemical Changes

Physical Changes:
1. Crushing a can(:

When crushing a can you are changing the shape of the can. You're changing the appearance.  
2. Water transforming into ice cubes

When transforming water into ice cubes, it goes from a clear liquid object to more of a white solid object.
3. Shredding paper

After shredding paper you change the length of each piece.

Chemical Changes:
1. Baking a cake

When baking a cake you transform ingredients into one whole thing. Therefore you cannot get any of those ingredients back.
2. The metabolism in the human body

As food gets to the human body it slowly breaks down bit by bit then the acids in the stomach break it all apart.
3. Boiling sugar

When boiling sugar in water the substance slowly dissolves in throughout the water.

 

Nika Kern(:

1 comment:

  1. Yea Nika everything is correct except for chemical change 3: dissolving sugar isn't a chemical change but a physical change because this process is reversible and also because it didn't form any new substance and stayed sugar. We just changed the sugar's state, shape and texture.

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