2011

Matter  Matter-  Solids  Liquids  Gasses  Gels

Properties of matter  The properties of matter observable  How it looks: Shiny, dull, color, etc.  How it feels: Hard, soft, rough, smooth  How it smells: Sweet, sour, odorless  How it sounds: Loud, soft, no sound  What it does: Magnetize, stretch, break, tear, bounce

States of matter  Solid-  Liquid-  Gas-  volume  It will take up the space provided

Measuring matter  Volume-  Graduated cylinder  Mass-  Triple beam balance  Density-  Mass/volume = density

Vocabulary  Solution- a liquid mixed with another substance so that they become one  Characteristic property- a property that only that substance has  Melting Point- point at which a substance goes from a solid to a liquid  Boiling point- point at which a liquid becomes a gas  Physical change- change in the shape, texture, or feel of a substance  Properties of matter- observable attributes  Matter- something that has mass and volume  Compound- two or more substance chemically combined  Chemical Change- change in the chemical makeup of matter

Physical changes in matter  Cut  Tear  Fold  Tint  Bend  Melt  Dissolve

Bell Ringer  List 3 chemical changes in matter.

Chemical changes in matter  Changes the state of matter to something else  Burn, rust, chemical changes, etc.  amazing-chemical-reactions/ amazing-chemical-reactions/

Characteristic Properties  Characteristic Properties-  Ex- Boiling point, melting point, freezing

Two Types of Matter PureMixture  Pure substance-  Ex- Sugar, salt, iron, copper  Mixture-  Ex- Salt water, fruit juice

Elements (Pure)  Elements-  They can not be broken down into simpler substances by chemical or physical means

Compounds (Pure)  Compounds-  Ex- H2O (water), CO2 (carbon dioxide), C12H22O11 (sugar)  Can be broken down by chemical reactions  This is how we get all the matter we have around us. The 100 or so elements on earth combine in different ways to make millions of different matter with different properties.

Solution  Most evenly mixed type of mixture  Ex- Sugar water

Who needs a laugh?  I've got Gas I've got Gas

Review 1. List the three states of matter. 2. What is meant by a characteristic property of matter? 3. List 5 ways to physically change matter and 3 ways to chemically change matter. 4. Give an example of a) Mixture b) Element c) compound

Density  Density = Mass per unit volume  D= Grams/ cm3 (solid)  D=Grams/ml (liquid)  Ex- D = 100 g/ 8 cm3 = 12.5 g/cm3  Layering Video Layering Video

Density  I have a block that weighs 213 grams. It is 3 cm by 2 cm by 4 cm.  What is its density?  Will it float or sink in water?