TEKS & Objectives
7.6. Matter and energy. The student knows that matter has physical and chemical properties and can undergo physical and chemical changes. The student is expected to distinguish between physical and chemical changes in matter.
7.1.A demonstrate safe practices during laboratory and field investigations as outlined in Texas Education Agency-approved safety standards
We will observe phases of matter.
I will identify and compare chemical and physical changes.
1. Watch video.
Generation genius Chemical vs. Physical Changes 3-5
2. Review vocabulary and complete quiz.
States of matter The main forms matter can exist in: Solid, Liquid and Gas
Physical change A type of change in which a new substance is NOT formed. For example: water boiling or cut paper.
Chemical change A type of change in which a new substance is formed. For example: burning something.
Catalyst A substance that speeds up a chemical reaction
3. Create a dramatic physical change.
CAUTION:
- Make sure to wear appropriate protective gear and work in a well ventilated area.
- Acetone is found in most nail polish removers. Some nail polish removers are 100% acetone.
- WARNING: Acetone is highly flammable. Breathing concentrated fumes of acetone can be very dangerous.
- Keep in mind that this is a physical change, similar to sugar dissolving in water.
Speaking of chemistry…
The chemist really loved the book he was reading about helium…
He just couldn’t put it down!
4. “Genius Challenge – Chemical vs. Physical Changes”
