1. Element Compound Mixture
NEED TODAY
SCIENCE
Element Compound Mixture
Students will differentiate between element, compounds and mixtures.

2. SCIENCE Materials needed Student notebook Colored pencils Print:
Rotation Slides
Molecular GO Fish Cards
SCIENCE

3. Presentation Cues
No one wants to listen to the teacher the whole time;)
Volunteer/Class Discussion – quick answer from raised hand (remember/understand)
Pair/share – quick chat with neighbor and volunteer or teacher pick share (remember/understand/apply)
Group task – longer time for pair or group to apply, analyze, evaluate or create
Individual write – personal reflection on topic
Rotations – solve the station with group and write answer on paper, rotate with timer and stay with your group
5?Quiz – quick check for understanding about topic

4. AGENDA Day 1 Elements vs compounds Molecular models Pet molecules
Molecular Go Fish

5. Why….
If there are only 90 atoms found naturally on earth, are there only 90 substances?
NO! Atoms attach to each other to form new substances called COMPOUNDS AND exist in MIXTURES to form even more.

6. What do these two things have in common?
Methane (CH4) C H H H
4 Hydrogens

7. What do these two things have in common?
Sand (SiO2) Si O O

8. WHAT ARE THEY? ELEMENT COMPOUND
Cannot be broken down into a simpler substance by ordinary physical or chemical changes
Substance made of 2 or more elements bonded together

9. WHAT ARE THEY MADE OF? ELEMENT COMPOUND Contains all the same ATOM
Smallest whole piece of matter
Contains all the same MOLECULE
Form when atoms bond (stick) together in fixed ratios

10. What are their symbols?? ELEMENT COMPOUND Atomic Symbol
From Periodic Table
Hydrogen (H)
Oxygen (O)
Sodium (Na)
CHEMICAL FORMULA
Tell us proportion of elements in compound

11. Atomic Symbols show which atoms are in each molecule
Molecular Models
1. Chemical Formula
Tells us which atoms and how many are in a molecule
H2O
Atomic Symbols show which atoms are in each molecule
Subscript Numbers show how many of the preceding atom are in each molecule
2 Hydrogens
1 Oxygen

12. Single particle picture
ELEMENT
COMPOUND
ATOM
MOLECULE H H O O

13. Substance Picture ELEMENT COMPOUND A bunch of the same atom
A bunch of the same molecule O O H H H H O O O O O H H O H H O O O O H O H H H H O O H O O

14. 2 kinds of molecular models – both ok
Ball-and-Stick
Use circles with lines to show atoms bonding within the molecule
Space filling
Use circles touching to show each atom H H H H O O

15. White Board: Who am I?
On your Individual whiteboard, either write Chemical Formula OR draw molecular model.

16. What is my chemical formula?
Carbon Dioxide(CO2)

17. Copper Metasilicate (CuSiO3)
What is my molecule?
Copper Metasilicate (CuSiO3) O Cu Si O O

18. What is my chemical formula?
Propane (C3H8)

19. Magnesium Bromide(MgBr2)
What is my molecule?
Magnesium Bromide(MgBr2) Mg Br Br

20. What is my chemical formula?
Sulfur (S)

21. Calcium Carbonate (CaCO3)
What is my molecule?
Calcium Carbonate (CaCO3) O Ca C O O

22. What is my chemical formula?
Hydrogen(H2)

23. Iron Hydroxide Fe(OH)2 Fe
What is my molecule?
Iron Hydroxide Fe(OH)2 Fe O O H H

24. What is my chemical formula?
Hydrogen Element (H)

25. Ferrous Oxide (Rust) Fe2O3
What is my molecule?
Ferrous Oxide (Rust) Fe2O3 Fe Fe O O O

26. What is my chemical formula?
Sulfuric Acid(H2SO4) O

27. H2O O O Model Pros/Cons Which do you prefer? H H H H Ball&Stick:
Shows how many e- are shared and shape of molecule. Time consuming
Formula:
Easy to write/type. Can’t tell what molecule looks like.
Space Filling:
Shows shape of molecule. Time consuming. H H
H2O H H O O

28. H2O Molecules Notes O O H H H H Chemical Formula Ball-and-Stick
Molecular Models
Chemical Formula
Ball-and-Stick
Space filling
What is it?
Letters and numbers show how many of each atom in compound
Each atom a labeled circle connected by line
Each atom labeled circle touching each other
What it looks like
H2O
Pros
Typing/writing
Good for large molecules
Can see structure
Shows bonds
Cons
Doesn’t show structure well
Tedious for large molecules
Tedious for large
Doesn’t show bonds H H H H O O

29. Preference Reflection…
Which do you prefer and why? H H
H2O H H O O

30. Pet Molecules
Use the list to the right (also printed and provided in class) to create a Pet Molecule…
Proper number of “atoms”
3” square +
Named
Colored

31. C Pet Molecules C C Make atoms of molecule into parts of an animal: H
Instruct students to build a “Pet Molecule” out of the one of the compounds on the List of Common Compounds H H
Propane Crab

32. Students will differentiate between elements, compounds and mixtures.
Day 2
Study Jam
Molecular Go Fish
Mixture Notes
Mixture Rotations

33. Make a CER about this graph…

34. Molecular Go Fish Deal each student 5 cards
Match the Formula card to the Model Card
Ask one person “Do you have CO2?” or “Do you have a card with a picture of one carbon and two oxygen?”
If they do, they must give to you.
If they don’t, they tell you to “Go Fish” and you draw.
Winner has most matches

38. What is a MIXTURE?
Mixtures are substances with 2 or more different types of particles!

39. How do we know something is a MIXTURE?
No Atomic Symbol or Chemical Formula
Multiple ingredients
Can be separated by physical or chemical means

40. Model of mixture?
Multiple particles

41. ECM

42. Rotation Stations 9 2
At each station, classify substance as ELEMENT, COMPOUND or MIXTURE and DESCRIBE WHY.
We’ll practice #1 TOGETHER FIRST. 8 3 4 7 5 6

43. Classify and describe why
1. Is this an ELEMENT, COMPOUND or MIXTURE?

44. Classify and describe why
2. Is this an ELEMENT, COMPOUND or MIXTURE?
Bismuth (Bi)

45. Classify and describe why
3. Is this an ELEMENT, COMPOUND or MIXTURE?

46. Classify and describe why
4. Is this an ELEMENT, COMPOUND or MIXTURE?

47. Classify and describe why
5. Is this an ELEMENT, COMPOUND or MIXTURE?

48. Classify and describe why
6. Is this an ELEMENT, COMPOUND or MIXTURE?
Zinc Oxide (ZnO)

49. Classify and describe why
7. Is this an ELEMENT, COMPOUND or MIXTURE?

50. Classify and describe why
8. Is this an ELEMENT, COMPOUND or MIXTURE?
Cadmium Yellow (CdS)

51. Classify and describe why
9. Is this an ELEMENT, COMPOUND or MIXTURE?

52. Classify and describe why
10. Is this an ELEMENT, COMPOUND or MIXTURE?
Phosphorus (P)

53. Classify and describe why
11. Is this an ELEMENT, COMPOUND or MIXTURE?

54. Classify and describe why
12. Is this an ELEMENT, COMPOUND or MIXTURE?
Lemonade

55. Classify and describe why
13. Is this an ELEMENT, COMPOUND or MIXTURE?

56. Classify and describe why
12. Is this an ELEMENT, COMPOUND or MIXTURE?
Cobalt (III) Stannate (Co2SnO4)

57. Classify and describe why
15. Is this an ELEMENT, COMPOUND or MIXTURE?

58. Elements in Fireworks!

59. Compounds in Paints!

60. Students will demonstrate mastery of ECM differentiation.
Day 3
Video
Poster
Study Critique

61. Poster project

62. I can write chemical formulas from models and make models from Chemical Formulas.