Mixtures

1
Mixtures

• Agenda
• Review
• Yesterdays homework
• Notes on Mixtures
• Homework

2
Element preparation

• H
• Li
• Na
• K
• Be
• Mg
• Ca
• Sr
• Ba

• B
• Al
• Ga
• C
• Si
• Ge
• Sn
• Pb

3
Element Quiz

• Put everything away
• Flip PT

4
Next Elements

• Nitrogen, N
• Phosphorous, P
• Arsenic, As
• Oxygen, O
• Sulfur, S
• Selenium, Se

• Fluorine, F
• Chlorine, Cl
• Bromine, Br
• Iodine, I

5
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6
?
7
Physical or Chemical?

• Egg cooking
• You growing
• Cutting grass

8
Compare homework with table partner.

• Questions?????

9
Peer Editing of Lab Reports

• Be tough I will have no mercy!

10
Be tough!

• Intro ___/10
• Real world
• Funnels down
• Good flow
• Researched terms
• Ends with Gs hypo
• Materials and Methods ___/20
• Good flow
• No I, me, we

• Research ___/20
• Labeled table ½
• Includes all data
• Clear/easy to understand
• Conclusions ___/20
• Explains WHY phys/chem
• Relates back to hypo
• Opens back up to new real world

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Elements, compounds and mixtures.

• Date

12
Substances

• An element is a substance that cannot be
  decomposed by any chemical reaction into simpler
  substances. All known elements listed on PT.

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• A compound is a substance composed of two or more
  elements chemically combined. Ex NaCl

14
Mixtures

• A mixture is a material that can be separated by
  physical means into two or more substances. The
  substances are simply mixed together no
  reaction.
• Ex. Iron sulfur.

15
Talk with your table partner

• How are you going to tell the difference between
  an element and a compound?

16

• A homogeneous mixture is a mixture that is
  uniform in its properties throughout. (milk,
  lemonade, tap water)

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• A heterogeneous mixture is a mixture that
  consists of physically distinct parts, each with
  different properties. (granite, sulfur mixed with
  iron)

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Talk with your row partner

• How are you going to tell the difference between
  a homogeneous mixture and a heterogeneous mixture?

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Physically separable
Chemically Separable
20
Practice with table partner E/C/Ho/He

• Mercury
• Salt sodium chloride
• Water
• Air
• Snickers bar
• Kool-aid

• Element
• Compound
• Compound
• Homo mixture
• Hetero mixture
• Homo mixture

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Practice Time

• Around the room are 16 bags filled with various
  types of matter.
• After looking at the samples, determine which
  type of matter E, C, Ho or He, it includes.
• Record on the back of the sheet provided.

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ECM

1. Salt water Ho
2. Hardware He
3. Zinc E
4. Rocks He
5. Distilled H2O C
6. Lead E
7. Sand - He
8. Sugar - C

1. Sugar H2O Ho
2. Silicon E
3. Baking soda C
4. Oil H2O He
5. NaCl C
6. Calcium E
7. Glass C
8. Play dough - Ho

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Complete Homework

• Element, compounds and mixture worksheet
• Next group of elements
• Lab report due Tuesday
• Typed
• On time
• Proper format
• NO EXCEPTIONS!