Date post: | 30-Aug-2018 |
Category: |
Documents |
Upload: | truongthien |
View: | 215 times |
Download: | 0 times |
Physical Properties: Mass, Volume, Density, Conductivity, Magnetism, State of Matter, Solubility
Mixtures, Heterogeneous mixtures, suspension, Homogeneous mixtures, colloid, solution
Unit: Physical Properties of Matter
Level 4
Students will understand that the position of different substances on a density column depends upon the mass and volume of that substance.
Identify and chart the position of various substances to show where they would fall on a density column when their mass and volume are known.
Level 3
Students will explore densities of various materials through measurement of their masses and volumes, and understand that substances can be classified on the basis of characteristics of their physical properties that can be demonstrated and measured.
Create a chart comparing densities of various materials through measurement of their masses and volumes, and classify and compare substances on the basis of characteristics of physical properties that can be demonstrated and measured.
Level 2
Students will identify a method to determine the volume of regular and irregular objects
Demonstrate or list various ways to determine the volume of regular and irregular objects
Level 1
Students will describe the relationship between mass and weight.
Create a diagram to compare and contrast the relationship between mass and weight.
Entry Students have a basic knowledge of the physical properties of matter
Define related vocabulary
Properties of
Matter
Physical Properties: Properties which
can be observed without changing
the chemical make-up.
Physical Properties Physical properties include:
appearance, texture, color, odor,
melting point, boiling point, density,
solubility, polarity, and many others.
Density=mass/volume, is a physical
property
Malleable Malleability (Ductility)- How easily
something bends.
Elasticity: is the property of matter to
return to its original shape.
Malleability and elasticity change
with temperature.
Conductivity Conductivity- is how easily energy
passes through something.
Copper, iron, and most metals are
good conductors. Rubber is a very
poor conductor.
Solubility Solubility is the ability of a solute to
dissolve in a solvent.
Solubility Solute: a material which dissolves in a
solvent.
Solvent: a chemical which dissolves a solute.
EX.: When you make lemonade, you measure out the solute (powdered mix) and add it to the solvent (water).
Solubility Saturated: when no more of something can
be absorbed
Viscosity Viscosity: Fluid resistance to flow.
Highly viscous liquids flow very slowly
(like syrup), low viscosity means a
liquid pours quick and easy (like water or oil).
Magnetic
Magnetism: If an object can become
magnetized, it is a physical property
of matter (only iron, nickel and cobalt
can become magnetic)
Physical Properties Melting Point: The temperature at
which a solid turns into a liquid or a
liquid turns to a solid.
Boiling Point:
The temperature at
which a liquid turns
to a gas or a gas to
a liquid.
Physical Properties Specific Heat: The amount of thermal
energy required to raise the
temperature 1 degree.
Ex: Water takes more thermal energy
to raise 1 degree than air does.
Pure Substances Pure Substance: a substance made
entirely out of one element or
compound.
Pure substances are very rare, most
things found in nature are mixtures.
Elements and Compounds Different types of atoms are elements.
Compounds are two or more elements combined.
A molecule can be of one element or it can be a compound
Mixtures Mixtures have more than one type of
element and/or compounds.
Heterogeneous mixtures: are obvious
mixtures, you can see the different
parts.
Heterogeneous Mixtures
Suspension: particles are visible and
will settle out on standing.
EX: Chocolate milk, V8, dust clouds,
pulpy orange juice, oil and vinegar.
Homogeneous Mixtures Homogeneous mixtures: uniform
appearance throughout the mixture
(this means it looks the same)
Steel, air, tap water,
salt water, most
objects we think are
the same material are
actually
homogeneous
mixtures.
Colloids Colloids are homogeneous mixtures
with particles of different sizes which
WILL NOT settle with time.
Jello, Milk, Fog, aerosols, blood,
mayonnaise and clouds are all
colloids.
Solutions Solutions are homogeneous mixtures
with uniform properties. If you look at a
solution under a microscope it would
still appear uniform.
Alloys Solid metal solutions are called alloys.