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Changes in Matter by the Atomic Nuclear Bombs (Physical Changes (change in…
Changes in Matter
by the Atomic Nuclear Bombs
Physical Changes
change in state of matter
ice cubes melting into water
Cutting
scissors cutting a paper
mixture
squares and triangles are mixed together physically
Does not create new substances
Chemical Change
forms one or more substances
change in color
production in gas
vinegar + baking soda = carbon dioxide gas
formation of precipitation
Exothermic reaction
releases energy
releases heat
Example:
water freezing
more energy released than required
Endothermic reaction
absorbs energy (usually heat) from surroundings
Example: frying pan absorbs energy to heat the egg
Products are colder than the reactants
cools surroundings
