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What is Chemistry? Most dictionaries define chemistry as “the greatest subject that there ever was and ever will be because it is so super awesome!” #1 Chemistry =
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What is chemistry? What is matter? Copy the slide when you see
What is Chemistry? Most dictionaries define chemistry as the
greatest subject that there ever was and ever will be because it is
so super awesome! #1 Chemistry = What is Chemistry? Another
definition you might see is chemistry is the study of matter, which
is also a great definition! But. What is Matter? Matter is ANYTHING
that takes up space and has massthat pretty much means everything.
This means chemists are super smart because they pretty much know
everything. States of Matter Solid particles packed closely
together, defined shape and volume Liquid particles slide past one
another, defined volume, but take the shape of their container. Gas
particles bounce around freely, spread out evenly to fill container
(take the shape and volume of container) How Do We Describe
Matter
How Do We Describe Matter?(other than the physical state of solid,
liquid or gas) PHYSICAL Properties CHEMICAL Properties How Do We
Describe Matter
How Do We Describe Matter?(other than the physical state of solid,
liquid or gas) PHYSICAL Properties CHEMICAL Properties Color Smell
Mass Volume Length Boiling Point Description that can be observed
or measured. Flammable? Combustable? Reacts with other
substances?... HOW IT REACTS CHEMICALLY!!! Description of an
ability. Physical Properties Intensive Property property that does
NOT change when you change the amount of substance. Ex: Color,
Texture, Density, Melting Point Extensive Property property that
changes when you change the amount of substance. Ex: Volume, Mass
What types of changes does matter undergo
What types of changes does matter undergo?(HINT: There are 2 types
of changes) PHYSICAL Changes CHEMICAL Changes The composition of
the substance IS changed. Possible signs include: 1. Energy
absorbed or released 2. Color change 3. Gas Produced 4.
Precipitate- solid that separates from solution 5. Not easily
reversed The composition of the substance does not change, just the
appearance What types of changes does matter undergo
What types of changes does matter undergo?(HINT: There are 2 types
of changes) CHEMICAL Changes PHYSICAL Changes What about this
one?