1. Intro to Matter, Physical and Chemical Changes

2. Common Core Connection
Objectives
Today I will be able to:
Identify the properties of matter and energy
Differentiate between chemical and physical properties and changes
Use proper technique to light a bunsen burner
Informal Assessment – monitoring student interactions in the lab and as they complete the practice
Formal assessment – analyzing student responses to the warm up, exit ticket and practice
Common Core Connection
Reason abstractly and quantitatively
Use appropriate tools strategically

3. Lesson Sequence Evaluate: Warm – Up
Evaluate: Review Accuracy and Precision Lab Conclusion
Evaluate: Review Density Practice
Explain: Matter and Energy Notes
Engage and Explore: Bunsen Burner Lighting Practice
Elaborate: Chemical and Physical Changes Practice
Evaluate: Exit Ticket

4. Warm - Up How do boats float? What type of property is density?
Think back to the article you read on Friday?
What type of property is density?

5. Objective Today I will be able to:
Identify the properties of matter and energy
Differentiate between chemical and physical properties and changes
Use proper technique to light a bunsen burner

6. Homework Wear Closed Toe Shoes Tuesday! 
Chemical and Physical Changes lab
Finish Physical and Chemical Changes Worksheet
Work on Data Collection and Analysis
September 27 is around the corner!

7. Agenda Warm – Up Review Accuracy and Precision Lab Conclusion
Review Density Practice
Matter and Energy Notes
Bunsen Burner Lighting Practice
Chemical and Physical Changes Practice
Exit Ticket

8. Review Accuracy and Precision Lab
How can we write a more effective conclusion?

9. Review Density Practice
What questions do you have about the density practice

10. Matter and Energy Notes

11. Matter
Anything that has mass and takes up space; can be changed by energy
Kinetic Molecular Theory – matter consists of tiny particles in constant motion

12. States of Matter - Solids
Has definite shape and volume
Crystalline Solid - has particles arranged in a regular, repeating pattern (salt crystal)

13. States of Matter - Solids

14. States of Matter - Solids
Amorphous Solid - loses its’ shape under certain conditions (wax, tar, glass)
Low energy

15. States of Matter – Solids
Network Solids – composed of nonmetal atoms connected by a network of covalent bonds
- Really consist of one huge molecule
- Example: Carbon – graphite and diamonds (allotrope)

16. States of Matter - Solids
Graphite

17. States of Matter - Solids
Diamonds

18. States of Matter - Liquids
Has definite volume but no definite shape; takes the shape of its container
Viscosity – resistance of a liquid to flow
- High Viscosity – honey, molasses
- Low Viscosity – water, alcohol

19. States of Matter - Liquids
More energy than a solid, but less energy than gas

20. States of Matter - Gases
No definite shape or volume, because of distance between and the independent movement of particles

21. States of Matter - Gases
High Energy
- Example: Air at room temperature moves faster than 100 mph

22. States of Matter - Plasma
Unbound nuclei and electrons
Found in stars and the sun

23. States of Matter

24. Law of Conservation of Matter
Developed by Antoine Lavoisier – “Father of Chemistry”
Matter cannot be created nor destroyed, instead it changes from one form to another

25. Energy
The ability to do work

26. Kinetic vs. Potential Energy
Kinetic Energy – energy in motion, moving objects
Ex. A baseball struck by a bat
SI Unit = Joules (J)
Potential Energy - energy possessed by objects through their position – stored energy
- Scientists are mostly interested in potential energy stored in chemical bonds
- Without energy being stored in bonds, you would have to eat all the time to keep your body going

27. Law of Conservation of Energy
Energy is neither created nor destroyed, instead it changes from one form to another (wind, heat, nuclear, etc)

28. Temperature vs. Heat
Temperature - measure of the average kinetic energy of the particles in a substance
- All particles do not move at the same speed
SI Unit = Kelvin (K)
Converting from Celsius to Kelvin
K = C + 273
Heat – a measure of the total amount of energy a substance posses

29. Chemical and Physical Changes and Properties

30. Physical Properties
An aspect of matter that can be observed or measured with out changing it
Intensive Properties – do not depend on the amount of matter present (density, boiling point, freezing point, color, odor)
Extensive Properties – depend on the amount of matter that is present (mass, volume, pressure, length)

31. Chemical Properties
Enables a substance to change into a brand new substance, and they describe how a substance reacts with other substances
Flammability
Reactivity

32. Changes in Matter
Through experimentation and natural occurrences, matter tends to change in either of two ways
- Physical Changes
- Chemical Changes

33. Physical Changes Only physical properties change
The form of matter changes, but the identity of the matter remains the same
Examples: change in state (phase change), breaking a pencil, tearing paper

34. Physical Changes
Phase Change – physical process in which one state of matter is transformed into another

35. Physical Changes

36. Chemical Changes
Properties of original substance disappear as new substances with different properties are formed
Change in chemical composition
Cannot return to original form
Can be detected through – energy changes (temperature), change in color, emission of gas, solid formed
Examples – wood burning, iron rusting, sour milk

37. Examples – Chemical or Physical Change?
A match lights when struck
Wood is placed into a chipper
A lump of gold is pounded into a large, thin sheet
Baking powder bubbles and gives off CO2 when it is moistened
A pan of water boils on the stove
Hydrogen Sulfide gas causes silver to tarnish

38. Bunsen Burner Demonstration and Practice
Watch Ms. Ose’s Demo and Follow her instructions

39. Chemical and Physical Changes Practice
Complete the practice at your desk. Whatever you do not finish will become your homework

40. Lab Safety – Lab Preview
Closed toe shoes, goggles, aprons must be worn to participate
Hair must be tied back
Review Bunsen burner safety
In step 3, DO NOT stare directly into the light
HCl, sodium chromate and barium nitrate are in a low concentration, if you spill it just rinse it off of your skin in a sink
Dispose of all chemicals in the waste container, DO NOT pour directly down the sink

41. Exit Ticket Watch the following clip
Decide if this is a chemical change or a physical change. Explain why
Video Clip