1. CHEMISTRY
Chemistry is the science that deals with the specific
properties, especially the composition and structure,
of matter and its transformations.
It isn't a chem-mystery!
Chemistry is a physical science because it deals
with "physical quantities" - things that can be
expressed by a number followed by a unit.
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4. Properties of Matter
Matter is anything that has mass & occupies a
volume. We also describe matter by itsphysical
and chemical properties.
5. Physical Properties
For a substance like gasoline its physical
properties are:
· odor
· colour
· density
6. Chemical Properties
For a substance like gasoline one of its
chemical properties is:
· flammability
This is true because it involves interactions
with other substances.
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10. Chemical Change (Reaction)
When gasoline ignites, it reacts with oxygen to
form new substances including carbon dioxide and
water. This is an example of a chemical change or
a chemical reaction.