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Mixtures

Mixtures. Agenda Review Yesterday’s homework Notes on Mixtures Homework. H Li Na K Be Mg Ca Sr Ba. B Al Ga C Si Ge Sn Pb. Element preparation. Element Quiz. Put everything away Flip PT. Nitrogen, N Phosphorous, P Arsenic, As Oxygen, O Sulfur, S Selenium, Se.

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Mixtures

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  1. Mixtures Agenda • Review • Yesterday’s homework • Notes on Mixtures • Homework

  2. H Li Na K Be Mg Ca Sr Ba B Al Ga C Si Ge Sn Pb Element preparation

  3. Element Quiz Put everything away Flip PT

  4. Nitrogen, N Phosphorous, P Arsenic, As Oxygen, O Sulfur, S Selenium, Se Fluorine, F Chlorine, Cl Bromine, Br Iodine, I Next Elements

  5. ?

  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. Intro ___/10 Real world Funnels down Good flow Researched terms Ends with G’s 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 Be tough!

  11. 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.

  13. 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)

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

  18. Talk with your row partner… • How are you going to tell the difference between a homogeneous mixture and a heterogeneous mixture?

  19. Physically separable Chemically Separable

  20. Mercury Salt – sodium chloride Water Air Snickers bar Kool-aid Element Compound Compound Homo mixture Hetero mixture Homo mixture Practice – with table partner E/C/Ho/He

  21. 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.

  22. Salt water – Ho Hardware – He Zinc – E Rocks – He Distilled H2O– C Lead – E Sand - He Sugar - C Sugar H2O – Ho Silicon – E Baking soda – C Oil & H2O – He NaCl – C Calcium – E Glass – C Play dough - Ho ECM

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

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