Properties of

Matter Review & Changes Notes

Wednesday, September 2nd, 2015

What is it?

What is it?

What is it?

What is it?

What is it?

Pencil CH3COOH N2

Aluminum (Al) Basketball

Methane (CH4) Ice Cream Zr

Properties of Sodium (Na)• Silvery Grey Color• 30 grams• Atomic Mass: 22.99 g/mol• Melting Point: 97.5°C• Can cut it with a knife• When exposed to air and cut loses it’s

grey color• Has 3 isotopes• Boiling Point: 883 °C• Density: 0.97g/cm3

• Each flake is 4.21cm long• Reacts quickly with water, snow, ice

(highly explosive)• Reacts with chlorine to form table salt

Physical Properties Chemical Properties• Grey Color• 30 grams• Atomic Mass• Melting Point• Boiling Point• Density• 3 isotopes• Cut with knife• 4.21cm flakes

• Exposed to air, loses color

• Highly explosive in water

• Reacts with chlorine to form table salt

Physical Change

• Physical properties (appearance) can change while the composition remains the same.

• A change in size, shape, or state of matter in which the identity remains the same is called a physical change.

Chemical change

• A change of one substance into another is a chemical change.• Burning a log• Formation of rust on a nail• Rotting eggs• Putting alka-seltzer in a glass of water

****Look for clues such as heat formation, the formation of bubbles/solids in a liquid, smell, or color change

Base on the previous notes classify the following as a physical property, physical change, chemical property, chemical change:  a)     Evaporation of waterb)    Tearing paperc)     Burning paperd)    The fact that water is a liquid e)    The fact that wood can burn

Base on the previous notes classify the following as a physical property, physical change, chemical property, chemical change:  a)     Evaporation of water - physical change b)    Tearing paper - physical change c)     Burning paper - chemical change d)    The fact that water is a liquid - physical property (intensive)

e)     The fact that wood can burn - chemical property

*** Check online tonight for more review/practice identifying properties & changes***