Download water displacement _ Matter

Water Displacement
displacement occurs when an object
is immersed in a fluid, pushing it out of
the way and taking its place.
The volume of the fluid displaced can
then be measured, as in the
illustration, and from this the volume of
the immersed object can be deduced
http://www.execulink.com/~ekim
mel/density_displacment.htm
This animation shows how a rubber stopper
placed in a graduated cylinder will cause the
water level to rise. Since the volume of the
stopper is equal to the volume of water
displaced and the initial and final mass is
known, the density of the irregularly shaped
stopper can be determined.
Density
Density- is a property that can be
used to identify a substance.
Calculating Density:
Density = Mass
Volume
Density
******If the density is greater than 1 the
object will sink
*****If the density is less than 1 the object
will float
q Wood has a density of 0.85 g/cm – it
will float
Steel has a density of 7.81 g/cm- it will
sink
*** Density- never changes
Weight and volume do
change
Matter
Anything that has mass
takes up space
Mass vs Weight
Mass
How much matter
Weight
How much mass
the effects of gravity
Calculating weight
Weight = m * g
Label in Newton
(N)
Three steps:
 Formula
 Plug in numbers
Solve and label your
answer
Phase changes
During a phase change particles are
changing
o Speed
Distance between each particle
3 points where temperature changes –
A,C,E
2 points where temperature doesn’t
change- B, D
D
B
A
C
E
WHY ??
Particles are going through a
phase change
Chang speed and how far they
are apart
Physical properties
Depends on the matter itself
Density, Mass, Weight, Volume, Color ,
Order, Texture
http://www.saskschools.ca/curr_content/
science9/chemistry/lesson8b.html
Chemical properties
Depends on the reaction of the matter
with other matter
Flammable
Corrosive
http://www.sasksc
hools.ca/curr_cont
ent/science9/chem
istry/lesson8a.html
Heterogeneous mixture
mixture that does
not appear to be
the same
throughout.
EX: Chocolate
Chip cookies,
Pizza
Homogeneous Mixture
A mixture that
appears to be the
same throughout.
It is “well mixed.”
EX: Milk, toothpaste,
and mayonnaise
Alloys- are metal
solutions
Compound
Molecule
Element
More than 1 kind
of atom
Can be the same
OR different kinds
One kind of atom
Chemically
combined
Chemically
combined
Ex: H20, Water,
table salt
EX: Hydrogen gas
EX: uranium,
calcium
Classify each of the following substances
as; an element, a compound, a solution, or
a heterogeneous mixture.
1.
2.
3.
4.
5.
6.
Sand
Salt
Pure Water
Soil
Soda
Pure Air
7. Carbon Dioxide
8. Gold
9. Bronze
10. Oxygen
11. Salad Dressing
12. Salt Water