1. Chemistry Do Now
Directions: Take out a sheet of notebook paper. Answer the following question. (5 minutes).
Write down 2 physical and 2 chemical properties for this bottle of water.

2. Chemistry Do Now 2-14-19 Physical Properties of water
Freezes at 0 degrees Celsius
Boils at 100 degree Celsius
Chemical Properties of water
Reacts violently with strong acids
Reacts violently with strong bases

3. Students will know how matter is classified by taking notes, completing a double entry journal and a worksheet on properties/changes in states of matter.
Mastery Level: 75% or better
Objective

4. Students identify 5 pure substances and 5 mixtures in their everyday life and include explanations for why they think a substance is “pure” or a mixture.
Homework

5. Engage
Yesterday we looked at the physical and chemical properties of matter. Now look at the image below and explain what is happening. Do you think this is an example of a physical or chemical change? Why?

6. Explore
Students will complete the reading of an article “Physical and Chemical Properties of Matter” DEJ and will answer the questions to the right of the paragraphs.

7. Physical and Chemical Properties and Changes

8. Physical Changes a change that occurs changing the of the substance.
____ new substances are formed.
without
identity No

9. Examples of Physical Changes
Change in size, shape, or color
Pencil shavings
Torn Paper
Crushed ice
Sugar dissolved in water
Painting a wall

10. Chemical Changes
a change that occurs that the of a substance to change; something is formed.
New substances with properties are formed
causes
identity
new
new

11. Evidence of Chemical Change
New ________appears
Bubbbles or ________
Precipitate forms (____ material)
color
_____ is produced
______ is produced
______ is given off
Heat
fizzing
Light
Sound
solid
Difficult or impossible to __________
reverse

12. Reactions with Acid
Vinegar + baking soda = release of Carbon Dioxide Gas

13. Reactions with Oxygen
OXIDATION
Iron + Oxygen = rust

14. Reactions with Electricity
Silver Plating

15. Reactions between Substances
Sodium + chloride = salt
Silver + sulfer in the air = tarnish

16. Other Examples Wood burning Metal rusting Food digesting
Gasoline burning
Cake baking

17. Physical or Chemical Change?
Water evaporates from the ocean.

18. Physical or Chemical Change?
The yolk of an egg, which contains sulfur, causes tarnish to form on silver.

19. Physical or Chemical Change?
The ice on a lake melts to become water in the lake.

20. Physical or Chemical Change?
Charcoal in a fire turns to ash after several hours.

21. Physical or Chemical Change?
A pencil is sharpened in a pencil sharpener, leaving behind shavings.

22. Physical or Chemical Change?
A battery makes electricity to turn on a flashlight.

23. Physical or Chemical Change?
A bicycle rusts when left in the rain.

24. Physical or Chemical Change?
A shirt is accidentally torn in the washing machine.

25. Physical or Chemical Change?
A log is split in two by an axe.

26. Your Turn!
Complete the section of the worksheet on physical and chemical changes of matter from yesterday.