Download - Chemistry...It`s All Around Us!

CHEMISTRY…IT’S ALL
AROUND US
What is Chemistry?
Objectives:
• The learner will understand the role
of chemistry in their lives.
• TLW investigate the characteristics
of matter.
• TLW explore the interactions of
matter & energy.
Key Topics
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States of Matter
Changes of Matter
Evidence of a Chemical Change
Chemical Reaction/Chemical Equation
What is Chemistry?
• Chemistry is the study of chemicals
their properties, and the reactions in
which they are involved.
What is a Chemical?
• Chemical- any substance that has a
definite composition (everything).
What is a Chemical
Reaction?
• Chemical reaction- the process by
which one or more substances change
to different substances.
What are the 3 States
of Matter?
• Solid
• Liquid
• Gas
States of Matter
Solid
Fixed volume
Fixed shape
Liquid
Fixed volume
No fixed
shape
Gas
No fixed
volume
No fixed
shape
What are Changes of
Matter?
Two Categories:
Physical
Chemical
What are Physical
Changes?
• Changes in which the substance stays
the same.
• Changes of states
What are Chemical
Changes?
• Substance changes to different
substance.
What type of change is
it……..?
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Cutting paper
Wood burning
Rust
Ice cream melting
Water boiling
Milk souring
Answers:
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Cutting paper-physical
Wood burning-chemical
Rust-chemical
Ice cream melting-physical
Water boiling-physical
Milk souring-chemical
What are some evidences
of Chemical Changes?
• Evidence that a chemical change may
be happening usually involves: 1)
evolution of a gas. 2) formation of a
precipitate. 3) an energy change. 4) a
color change.
Evidence of a Chemical
Change
Gas Evolution
Bubbles form or odor
Change in Energy
Formation of a
Precipitate
Change in temp. or
light given off
Cloudy appearance;
precipitate forms
Color change
Color looks different
Chemistry……It’s All
Around Us!!!!!!!
• Please keep your Scientific Notebook
in order.
• Review All Work Daily