Transcript Properties of Matter Review

Properties of
Matter Review
What is Matter? 1.1
 Matter
is anything that has mass and
takes up space.
 Volume is the amount of space an item
takes up. No two items can occupy the
same space at the same time.
 Liquid volume is measured in a graduated
cylinder and reading the measurement at
the meniscus. Units used are mL and L
1.1 Continued
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Volume of a regularly shaped solid (book,
kleenex box ect) is measured by L X W X H.
The units used are cm3 or m3.
To measure volume of an irregularly shaped
solid (marble, coin etc…) Place water in a
graduated cylinder, measure the volume,
place the item in the graduated cylinder with
water, measure the new amount, the amount
displaced is the volume of the solid. Do not
forget to subtract your old amount from your
new amount. Units used are mL or L since 1
cm3 = 1 mL.
1.1 continued
 Mass
is the amount of matter in an object.
A balance is used to measure mass and g
or kg are the units used to express mass.
 Weight is gravitational pull on an object.
Review Figure 5 on page 7.
 Inertia is the tendency for an object to
start moving or stop once in motion.
 The larger the mass the larger the inertia.
Physical Properties 1.2
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A physical property of matter can be
observed or measured without changing the
matter’s identity. Example: Color, texture,
strength….
Review figure 2 on page 11 for other
examples.
Physical properties are used to help identify
an object.
Physical properties are easy to observe.
Density is the amount of matter in a given
space.
1.2 continued
 To
find density measure the mass of the
object, volume of the object and plug
those numbers into the formula
D
= M/V
 Units used are g/cm3, g/mL, kg/m3
1.2 continued
A
physical change does NOT change the
identity of an object. Freezing water into
ice does NOT change the fact that it is
water.
 Adding lemonade mix to water does not
change the fact that it is mix and water—
can be reversed.
1.3 Chemical properties
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Chemical properties describe matter based
on the ability to change into new matter.
2 chemical properties are flammability and
reactivity.
Chemical properties are not easy to observe
since the chemical change must occur in
order to see the property.
A candle wick will burn, but you can only
observe it once it is burning.
1.3 continued
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Characteristic properties are the most useful
because they are the same no matter how
large or small the sample is.
Chemical changes happen when one or
more substances combine to create a new
substance with new properties. Baking a cake
is a chemical change because you are
taking all the ingredients, adding heat which
causes reactivity and creates a whole new
substance with a different composition (make
up)
1.3 continued
 Signs
of a chemical change include; heat
being given off, odor, fizzing/foaming,
and light or sound being given off.
 Reversing a chemical change is much
more difficult than reversing a physical
change, some may NOT be reversed such
as the cake baking.