Element, compound or Mixture

Agenda Submit Lab Report – now Review: elements, Physical or chemical, Notes on Elements, compound and

mixtures. Homework

H

hydrogen

Li

lithium

Si

Silicon

Ca

calcium

Sn

tin

B

boron

C

carbon

K

potassium

Ge

germanium

Mg

magnesium

Pb

lead

Ga

gallium

Na

sodium

Be

beryllium

Al

aluminum

Al

aluminum

Sr

strontium

Ba

barium

  The Periodic Table of the Elements  

IA IIA IIIB IVB VB VIB VIIB   VIIIB   IB IIB IIIA IVA VA VIA VIIAVIIIA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

               

               

                                   

                                   

                                   

                                   

                           

                           

New Elements

Physical or Chemical

Hair cut digestion Making tea welding

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.

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)

Flow chartMatter

Substance Mixture

Homogeneous HeterogeneousElement 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

Round the room identification

On your own or with a partner, analyze the objects within – determine E, C, Ho, He

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

Continue working on elements Element, compounds and mixtures

worksheet. Tell what type of substance and mixture. Explain reasoning