matter:. properties of matter: what is matter? matter is defined as anything that has mass and takes...
TRANSCRIPT
Matter:
Properties of Matter:
• What is Matter?
• Matter is defined as anything that
has mass and takes up space.
• Can you give an example of matter??
Mass:
• How do you define mass?
– The amount of matter an object has.
• Which has a greater mass, a tennis
ball or bowling ball?
•Which has more matter?
Mass vs. Weight• Is your mass the same on moon as it
is on the Earth?
• Is your weight the same on moon as
it is on the Earth?
–What is the difference between mass
and weight?
Substance:
• Matter must have uniform composition
• Matter must have definite composition
• All samples of a substance must have
identical physical properties
• Pure substances contain only one
type of matter
Physical Properties
• A condition of a substance that can
be observed or measured without
changing a substances chemical
composition.
Physical Properties
• What are some words that indicate
physical properties?
• Solubility, density, melting point,
boiling point, color, odor
What are the three states of matter?
• Solid
• Liquid
• Gas
Solids:
• Matter that has definite shape and
volume
• Expand slightly
• Incompressible
Liquids:
• Fixed volume
• Takes shape of their container
• Can flow
• Incompressible
• Expand when heated
Gas:
• Takes shape and volume of its
container
• Easily compressed
• Flow
• Particles are spaced far apart
Can you tell the difference?
How would you describe the state of this …?
Vapor:
• Gas of a substance that is a liquid at
room temperature
• Example: steam(water vapor)- liquid
(water) at room temperature
Plasma• Another state of matter
• Can be created by heating a gass
• Made up of positively and
negatively charged particles
• Neon lights, welding arcs, lighting,
stars
Physical Change:
• Changing of a substance with out
altering its composition
Words that describe physical change:
• Cutting, grinding, bending, melting,
freezing, boiling , dissolving
Mixtures: • A physical blend of two or more
substances
Types of mixtures:
• 1)Heterogeneous mixtures:
–Mixtures that are not uniform in composition
– Example: salad
• 2)homogeneous mixtures:
–Mixtures that are uniform in composition
– Salt water, milk
Solutions:
• Solutions are homogeneous mixtures
• May be solids, liquids or gases
Phase:
• Any part of a system with uniform
composition
• Heterogeneous mixtures have two or
more phases
• Homogeneous mixtures have one
phase
Separation of mixtures:
• Some substances can be separated by
physical methods
• Distillation
• Evaporation
• Density
• Magnetism
Heterogeneous or Homogeneous:
• 1. Salad
• 2. soda
• 3. milk
• 4. Trail mix
• 5. Orange juice with pulp
• 6. Salt water