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MATTER
All matter has 2 types of
properties: Physical
properties and chemical
properties.
PHYSICAL PROPERTIES
Definition: Can be observed without changing the substance into another substance. • Color• Shape• Odor• Density• Melting/Boiling
Point• Malleability• Elasticity
CHEMICAL PROPERTIES
Definition: Indicates how a substance reacts with something else; the substance is chemically changed when observing it.• Combustibility• Flammability• Ability to rust• Reacts with a base to
form water
• The ability to burn
• Ability to tarnish• Ability to rust• Ability to
decompose• Ability to react
with other chemicals
• Instability• Ability to do
acid/base reactions
Examples of chemical properties include:
GRAPHIC ORGANIZERS
Graphic organizers are visual representations of knowledge,
concepts or ideas.
Chemical Properties
Flammability
Combustibility
React with a BASE to form
water
Ability to rust
CHEMICAL CHANGE
When pure substances mix and change into entirely new/different substances. Color change Heat or light is given off Gas Production (not from
boiling) (ex: fizzing) Odor change Precipitate (e.g. powder)
forms Usually irreversible Energy Change (usually
seen as a temperature change)
Chemical Change
Color change
Heat or light is given off
Gas production (not from boiling)
Odor changePrecipitate forms (ex: powder)
Usually irreversible
Energy change (raise or
lower temp.)
WHICH CLUE(S) TELLS YOU THESE ARE CHEMICAL CHANGES?
Examples:
1.Bleaching hair
2.Frying an egg
3.Fireworks exploding
1.
2.
3.
PHYSICAL PROPERTIES OF SUBSTANCES
Definition: Can be observed without changing the substance into another substance. ColorShapeOdorDensityMelting/Boiling PointMalleabilityElasticity
Physical Properties
Color
Malleability
Shape
ElasticityOdor
Density
Melting/Boiling Points
PHYSICAL CHANGE
Definition: A change in which matter changes form, but does not change composition. (an appearance change only) Change state (solid, liquid,
gas) Shape changes (crinkling,
tearing) Size changes (crushing,
smashing) No color change (except
when dye added) Dissolving
Physical Change
Change in state
(solid, liquid, gas)
Shape changes
(crinkling, tearing)
Size changes
(crushing, smashing)
Dissolving
WHICH CLUE(S) TELLS YOU THESE ARE PHYSICAL CHANGES?
Examples:
1.Glass breaking
2.Butter melting
3.Chopping wood
1.
2.
3.
CHECK FOR UNDERSTANDING
Given the particle diagram to the RIGHT representing four molecules of a substance:Which particle diagram best represents this same substance after a physical change has taken place? A chemical change?
Hint: How do we know that a chemical change has taken place?
METALS VS. NONMETALS COMPARISON CHART
Metals Non-MetalsShiny Dull (not shiny)
Malleable/bendableBrittle/fragile/
breakable
Conducts electricityNot a conductor of
electricity
Reacts with acid No reaction with acid
Usually solid at room temperature
Can be solid, liquid, or gas at room temperature
Independent practice
EXIT SLIP
1. Which statement describes a Physical Property that can be used to distinguish between compound A and compound B?a) A rusts after 10 minutes, and B rust after 30 daysb) A does not corrode in acid, and B does corrode in acid.c) A takes 30 kilojoules of energy to combust, and B has a takes 100 kilojoules of energy to combust.d) A is a blue solid, and B is a white solid.
EXIT SLIP
2. Which statement describes a Chemical Property of Sodium?a) Sodium has a melting point of 97 ⁰C.b) Solid sodium is white.c) Sodium combusts when introduced to water.d) Solid sodium has a crystal lattice structure.
EXIT SLIP
3. The table below depicts the property of matter along with a descriptive characteristic. Which of the following are correctly paired?
Scenario Property
A Baking soda and vinegar bubble and fizz when combined Physical
BA solid forms when liquid lithium bromide and liquid silver nitrate mix
Chemical
C A bicycle chain left outside for a year rusted Physical
D The density of water is 1 g/cm3 Chemical
EXIT SLIP
4. Which of the following rows reflect properties of a metal?
1. Breaks easily
2. Reacts with an acid
3. Dull in appearance
4. Does not conduct electricity
HOME LEARNING
Complete any class activities that were not completed during class.