Monday 10/07/13 How can a substance be indentified? By physical and chemical properties

Tues 10/8 2. What measurements are needed to find density? Mass = grams (g) Volume = ml ( liquid ) cm3 (solid) Density = Mass /Volume

Wood block White tile Styrofoam Marble Rock

Thur 10/10 3. List evidence of a chemical change or reaction. Color change(?) rust corrode oxidize Gas Light Precipitate Temperature

Fri 10/11 4. Physical or Chemical P C

Tue 10/15 5. Element or Compound compound

Wed 10/16 6.

Thursday 10/17 7. Elements in each? Oceans Living matter Atmosphere Earth’s crust

Thursday 10/17 Elements in each? Oceans – H,O,NaCl Living matter – C, H, O, Atmosphere – N, O, CO2 Earth’s crust - O, Si, Fe

Thursday 10/17 7. Chemical or physical properties state at room temperature melting point freezing point color density /specific gravity solubility conductivity magnetic

Fri 10/18 8. Where are the metals, non-metals, and metalloids located on the periodic table? Metals Non-metals Metalloids

Mon 10/21 9. Find the density. 25 g

Tue 10/22 10. Name a physical property of a metal. Conductor Shiny luster

Wed 10/23 11.A bar of soap is 12 cm tall, 6 cm wide, and 10 cm long. It has a mass of 415 grams. What is the density of the bar of soap. (round to 2 places behind the decimal point) D=M/V 12cmx6cmx10cm=720 cm3 D=415g / 720cm3 D=0.58 g/cm3

Thur 10/24 12. What mineral is it? Mass 96.5 g, volume 5 cm3, has shiny luster, and malleable. Use P. 607 19.3 g/cm3 Gold

Today 30,000 per kg $7,500,000

Density Periodic table Minerals Energy Energy Transformations Heat transfer Movement of heat Chemical change

D = M/V D = _____ g/cm3 (solids) D = _____ g/ml (liquids) Grams/ balance - scale Volume/ LxWxH - ruler Volume/ displacement (graduated cylinder)

Minerals Solid Natural Inorganic Crystal structure Chemical formula How to indentify: Hardness- mohs scale 1-10 Color – sometimes Streak – color of powder Luster – metallic or non metallic Density and fracture

Conductor - electricity Malleable – hammer Ductile – bend Luster – shiny, dull Semi-conductor - metalloids

Label , color, list metalloids.

Conductor - electricity Malleable – hammer into sheets Ductile – bend, without breaking Luster – shiny, dull Semi-conductor - metalloids

A or D B B or C A D C B D C 3

Work on cut and paste Copy picture below , use plain paper

Jolene wants to experiment with sugar cubes Jolene wants to experiment with sugar cubes. Which of the following causes a sugar cube to only change physically, not chemically? a) burning the sugar cube with a match b) crushing the sugar cube and dissolving it in water c) dehydrating the sugar cube with sulfuric acid d) chewing the sugar cube and digesting it

Finish Phy and chm change cut and paste Work on BM review

Common Elements What common elements are in each Common Elements What common elements are in each? Draw something , and circle the elements that will help you remember. 1. Atmosphere 2. Living matter 3. Earth’s crust 4. Oceans

19. Label the graphs. Atmosphere Earths Crust Oceans

Oceans

____________ glass breaking ____________ mixing salt and water 2. ____________ hammering wood together 11. ____________ mixing oil and water 3. ____________ a rusting bicycle 12. ____________ water evaporating 4. ____________ melting butter 13. ____________ cutting grass 5. ___________ separate sand from gravel 14. ____________ burning leaves 6. ____________ bleaching your hair 15. ____________ fireworks exploding 7. ____________ frying an egg 16. ____________ cutting your hair 8. ____________ squeeze oranges for juice 17. ____________ crushing a can 9. ____________ melting ice 18. ____________ boiling water

If I mix two liquids together and it changes color, then it is a physical change.

Common Elements What common elements are in each Common Elements What common elements are in each? Draw something , and circle the elements that will help you remember Atmosphere N O CO2 2. Living matter C H 3. Earth’s crust Si Fe 4. Oceans NaCl

Title Physical vs. Chemical Physical properties p. 26 Physical change p. 30 Chemical properties p. 26 Chemical change p. 31

1. A physical property is a characteristic of a substance that can be observed without changing the substance into something else.

2. physical change - change that alters the form or appearance of a material but does not make the material into another substance.

3. Chemical Property - is a characteristic that is observed when a substance interacts with another substance. Ex: matches will burn

4. Chemical Change - occurs when a substance combines with another to form a new substance Ex: Match burning

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6.

Go to strack page quick links textbook username - strack Password - stracktx Click on www.pearsonsuccessnet.com science not active use lang arts Username - k then 6 digit iD# Password - Books6

A. Physical properties - A quality or condition of a substance that can be observed or measured without changing the substance's condition. some examples: state at room temperature melting point freezing point color density /specific gravity solubility conductivity magnetic

2. All substances have definite properties, A. Physical properties / physical change - "things it can do alone" definition - A quality or condition of a substance that can be observed or measured without changing the substance's condition. some examples: state at room temperature melting point freezing point color density /specific gravity specific heat polarity solubility conductivity magnetic malleability Substances that are combined without reacting are called mixtures, to learn more about mixtures. Substances that react to one another and chemically bond are called elements or compounds. B. Chemical properties / chemical change - "it takes two to tango" definition - How a substance reacts to other substances. When one or more substances react they become a third, unique, substance often with new physical and chemical properties. some examples: oxidation - rusting or burning flammability in a chemical reaction there are reactants and products, these occur in definate proportions. chemical reactions are predictable and repeatable there are also definate clues that a reaction has taken place including: change in physical properties color change gas given off temperature change Law of conservation of matter / mass Matter can never be created nor destroyed. All matter that is present before a chemical reaction occurs is also present after the reaction, although it may be in a new compound.