Mixtures

Agenda Review Yesterday’s homework Notes on Mixtures Homework

Element preparation H Li Na K

Be Mg Ca Sr Ba

B Al Ga

C Si Ge Sn Pb

Element Quiz

Put everything awayFlip PT

Next Elements Nitrogen, N Phosphorous, P Arsenic, As

Oxygen, O Sulfur, S Selenium, Se

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

?

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Physical or Chemical?

Egg cooking You growing Cutting grass

Compare homework with table partner.

Questions?????

Peer Editing of Lab Reports

Be tough – I will have no mercy!

Be tough! 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

Elements, compounds and mixtures.

Date:

Substances

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

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

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.

Talk with your table partner…

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

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

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

Talk with your row partner…

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

Matter

Substance Mixture

HomogeneousHeterogeneousElement Compound

Physically separable

Chemically Separable

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

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.

ECM1. Salt water – Ho2. Hardware – He3. Zinc – E4. Rocks – He5. Distilled H2O– C

6. Lead – E7. Sand - He8. Sugar - C

9. Sugar H2O – Ho

10. Silicon – E11. Baking soda – C12. Oil & H2O – He

13. NaCl – C14. Calcium – E15. Glass – C16. Play dough - Ho

Complete Homework

Element, compounds and mixture worksheet

Next group of elements Lab report due Tuesday

Typed On time Proper format NO EXCEPTIONS!