1. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Properties: Physical or Chemical
Copper wire will conduct electricity.
Oxygen is a gas a room temperature.
Copper forms green copper carbonate when in contact with moist air.
The density of sunflower oil is g/mL.
Magnesium will burn brightly when ignited.
Iron has the ability to rust.
Food is less likely to rot or decay if refrigerated.
Potassium chloride will dissolve (is soluble) in water.
The sugars in fruit juices will ferment in the absence of oxygen.
Acids give candy a sour taste.

2. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Properties: Physical or Chemical
physical
chemical

3. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Properties: Physical or Chemical
The melting point of ice is 0°C.
Paper is a flammable material.
Solid sodium explodes when in contact with water.
Titanium is a hard metal with high tensile strength.
Most metals have high thermal conductivity.
Liquid water is not very chemically reactive.
Wood will combust in the presence of oxygen.
Aluminum is a lustrous, or shiny, metal.

4. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Properties: Physical or Chemical
physical
chemical

5. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Physical Properties: Extensive or Intensive
Melting/freezing point
Taste
Boiling point
Mass
Length
Hardness
Volume
Color
Density
Weight
Odor
Shape
Electrical conductivity
Thermal conductivity
State of matter at room temperature
Malleability
Ductility
Temperature
Viscosity

6. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Physical Properties: Extensive or Intensive
intensive
extensive
intensive

7. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
The sand was separated from the water by filtration.
Twenty (20) grams of sodium chloride was dissolved in 100 grams of water.
Iron produces rust when exposed to oxygen.
The tree was cut into logs.
The bananas have ripened.
The candle burned for three hours.
Fifteen (15) grams of water became ice at 0°C.
Potassium metal ignites when dropped in water.
The coffee beans were ground with the coffee grinder.

8. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
physical
chemical

9. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
The paper was crumpled before being placed in the recycling bin.
Aluminum combines with oxygen to form aluminum oxide.
Rubbing alcohol evaporates at room temperature.
Potassium chlorate decomposes to produce potassium chloride and oxygen.
Water droplets condensed on the outside of the tea glass.
The mixture of alcohol and water was separated by distillation.

10. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
physical
chemical

11. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
The silver platter is tarnished.
The leaves change color each fall.
Hydrogen peroxide was used to bleach her hair.
The magnesium was cut into 1-cm ribbons.
Milk sours if not refrigerated.
The chalk was crushed with the mortar and pestle.
Hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat.
Dry ice sublimes without melting.
A match ignites when struck on a flint.

12. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Changes: Physical or Chemical
chemical
physical

13. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Chemical Change
List four of the six indicators that provide evidence of chemical change.
Writing Practice
In a well-developed paragraph, explain the difference between a physical property and a chemical property and between a physical change and a chemical change.
Use the terms: extensive, intensive, identity, reaction, composition, substance
Give examples of each type of property and change.
BONUS: Explain the difference between vaporization and evaporation.

14. U2-11 Properties and Changes Practice
Tuesday, 09/03/2013
U2-11 Properties and Changes Practice
Chemical Change
List four of the six indicators that provide evidence of chemical change.
Formation of a gas
Formation of a precipitate
Change in color
Change in energy
Change in magnetism
Change in smell or production of odor