Different Types of Matter Grade 2 http://www.pond5.com/stock-footage/68580/atom5.html

Content Topics Macroscopic Properties of Matter Reasons for Properties of Matter* Purposes for Specific Materials *Not part of standard

Macroscopic Properties How compact the material is What it looks like What it feels like What it does Conduct electricity Gets wet

Phase The state (solid, liquid, gas) of the material unless it is heated or cooled. Solid Liquid Gas

Practice Which objects are made of a hard material? Legos and game controller What does a hard material feel like? Solid, can’t push through it What does a hard material look like? Can’t see through it

Practice How many different shiny materials do we have in the room? These materials will be reflective Are there any materials in the room that are usually liquids? “Usually” means at normal atmospheric temperatures and pressures

Reasons for Properties (not included in standard) Chemical properties cause the physical properties. Each type of atom and molecule has its own unique properties. Hydrogen, Oxygen, Water (Gas, Gas, Liquid)

Compounds (not included in standard) Most of the materials we see are compounds. Made up of different atoms Specific structure Water Molecule Structure Open Source Image

Trends in Periodic Table (not included in standard) The properties of the atoms (pure materials) depend primarily on the configurations (patterns) of electrons around the nucleus. Each element in a column/group on the periodic table has the same electron configuration. Each periodic table group of elements has similar chemical and physical properties.

Precious Metals In Same Group http://periodictable.com/Properties/A/Phase.st.log.html

Trends (not included in standard) Many of the properties of matter are due to the structure of the molecules that make-up the matter. Polarity (H2O) Acid/base ions (H+ and OH-) can be removed Acetic Acid Sodium Hydroxide

Water (not included in standard) Water molecules are polar (slightly positive and negative ends). Water molecules are strongly attracted to each other. (surface tension) − +

What are some purposes for types of matter? The purpose is the function of the material. Movability during an earthquake Strength against the wind Noticeable in the dark Getty Images

Some Purposes Texture Color Strength Flexibility Sand paper is rough Orange is noticeable Strength My kite string didn’t break in the wind Flexibility I can bend the index card into a new shape named in clarification statement

More Purposes Hardness Absorbency Is your bed hard or soft? Does the paper towel soak up a lot of water? named in clarification statement

Gas in Floating Balloon Practice Match common uses and elements Why are these elements used? What are the properties? Strength, appearance, compactness, $ value 1 Foil 2 Jewelry 3 Penny 4 Gas in Floating Balloon 5 Fishing Sinkers A Lead (5) B Gold (2) C Helium (4) D Aluminum (1) E Copper (3)

Building Materials Materials used to build houses are specific to weather in the area. Stucco is common in California. Why? Stucco holds-up well in the Sun Stone and brick are more common than wood in wet areas. Why? Stone and brick hold up better than wood in wet areas. Wood rots when it gets wet. Why? Why?

Stucco Brick