1. Elements, Compounds, Molecules, and Mixtures

2. Bell Work 11/17/15
What do salt, sugar, baking soda , and water all have in common?

3. Bell Work 11/17/15
What do salt, sugar, baking soda , and water all have in common?
They are all compounds!
Because most elements take part in chemical changes easily, they are rarely found alone in nature. Instead, they are found combined with other elements as compounds.

4. Student Learning Objectives:
SPI Can I differentiate
between a mixture and a compound
SPI Can I interpret the
results of an investigation to determine whether a physical or chemical change has occurred.
TOC:
# EMC Foldable

5. Video
TOC # EMC Foldable
Elements
Compounds
Molecules
Mixtures

6. Inside the foldable:
Definition:
Examples:

7. Element:
A pure substance that cannot be broken down into a simpler substance by ordinary means
Element = One or more of the same atoms NOT bonded together.

8. Gold – Au Silver – Ag Oxygen – O Hydrogen – H
Examples:
Gold – Au
Silver – Ag
Oxygen – O
Hydrogen – H

9. All compounds are molecules!
A pure substance made of two or more different elements chemically bonded together
All compounds are molecules!

10. Water – H2O Carbon Dioxide – CO2 Table salt – NACL
Examples:
Water – H2O
Carbon Dioxide – CO2
Table salt – NACL
Table Sugar- C12H22O11

11. Molecule:
A group of atoms (same or different) held together by a chemical bond.
NOT all molecules are compounds
Examples:
Water – H2O
Oxygen – O2
Hydrogen – H2

12. Video
Elbow Partner:
Discuss what is the difference between and molecule and a compound?

13. Mixture:
A combination of two or more substances that are not chemically bonded and are not in fixed proportion.
Most natural substances are mixtures.
NO Chemical reaction occurs when you combine 2 or more substances.
No fizzing, No smoke, No precipitate, No explosion, No heat or light given off

14. Examples: Tossed salad Oil & vinegar Bowl of cereal Kool-Aid
Salt Water

15. Discuss with Elbow Partner: Element, compound, or mixture?

16. Element, compound, or mixture?
Table Sugar= C12H22O11
Compound
C25H33N5O7
Element
mixture

17. Whiteboard Review Activity:
Is this an element, compound, or mixture?
Write a capital E if you think it is an element
Write a capital C if you think it is a compound
Write a capital M if you think it is a mixture

18. Is this an element, compound, or mixture?Ar

19. Is this an element, compound, or mixture?
Monster Energy Drink

20. Is this an element, compound, or mixture?
C6H12O6

21. Is this an element, compound, or mixture?
Pizza

22. Is this an element, compound, or mixture?

23. Is this an element, compound, or mixture?
Uut

24. Exit Ticket
Elements
Molecules
Compounds