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14-10-2016
Chemistry

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Methods scientists use to determine if a change was physical or chemical.

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hernandezlea7 hernandezlea7

14-10-2016

chemical reactions can be identified when there is a change in color, energy is produced, change in odor, or if new substance forms.

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Hussain514 Hussain514

20-10-2016

Chemical change can be determine by
change in color
energy
change in odor
rusting metal
wood burning
Physical change can be determine by
Ripping of paper
Sharpening of a pencil
Boiling of water
Melting an ice cube
Braking of glass

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