Post on 26-Dec-2015
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Bell Work: Page 7 of Scientific Notebook
• What are the 3 states of matter?
• Describe each of the 3 states of matter.
CHEMISTRY…IT’S ALL CHEMISTRY…IT’S ALL AROUND USAROUND US
CHEMISTRY…IT’S ALL CHEMISTRY…IT’S ALL AROUND USAROUND US
What is Chemistry?What is Chemistry?
Spi’s and CLE’s:• CLE 3221.Inq.3 Use appropriate tools
and technology to collect precise and accurate data.
• CLE 3221.Inq.1 Recognize that science is a progressive endeavor that reevaluates and extends what is already accepted.
• CLE 3221.2.1 Investigate the characteristic properties of matter.
• CLE 3221.2.2 Explore the interactions
between matter and energy.
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• 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 Reaction?
• Chemical reaction- the process by which one or more substances change to different substances.
States of Matter
Solid Fixed volume
Fixed shape
Liquid Fixed volume
No fixed shape
Gas No fixed volume
No fixed shape
Put this chart at the top of page 6 in your scientific notebook.
What are Changes of Matter?
Two Categories:Physical - Changes in which the
substance stays the same.
Chemical – substance changes into something different
What type of change is it……..?
• Cutting paper• Wood burning• Rust• Ice cream melting• Water boiling• Milk souring
Answers:• 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 Change in temp. or light given off
Formation of a Precipitate
Cloudy appearance; precipitate forms
Color change Color looks different
Place the chart at the bottom of page 6 of Scientific Notebook.
Closure:• Please Be Able to tell me the
difference between physical and chemical changes when you leave the room.
Homework:• Name at least 3 branches of
chemistry(example- biochemistry).
• Why is the ozone layer above the earth important?
• What is causing the ozone layer to get smaller?