1. Answer the following four questions:
Do Now
Physical Science
February 24th 2011
Matter: anything that has mass and takes up space
Mass – the amount of matter in something
Volume – the amount of space something occupies
Answer the following four questions:
What is an example of solid matter?
What is an example of liquid matter?
What is an example of gaseous matter?
What is an example of something that is NOT matter?
SWBAT calculate basic density problems
HOMEWORK: Section Review
Page 52
Numbers 1  6

2. Do Now Review! What is an example of solid matter?
Box
Person
Car
Desk
What is an example of liquid matter?
Water
Oil
Juice
Soda
Liquid Nitrogen
What is an example of gaseous matter?
Air
Oxygen gas
Nitrogen gas
Methane
What is an example of something that is NOT matter?
Light, is not matter!!, it is simply a reflection of light off of the gaseous air particles!

3. What is a property?
Property: a characteristic of a substance that can be observed
What do you observe about this clip art?

4. Physical Property
Physical property: a property that can be observed without changing the identity of the substance.
Examples:
luster
malleability: the ability to be hammered into a thin sheet
ductility: the ability to be stretched into a wire
melting point
boiling point
density
solubility
specific heat

5. Special Physical Properties
Melting point: the temperature at which a substance changes from a solid to a liquid at a given pressure
water = 0oC
Boiling point: the temperature at which a substance changes from a liquid to a gas at a given pressure
water = 100oC

6. Chemical Properties
Chemical property: a property that can only be observed by changing the identity of the substance
Examples:
flammability
ability to rust
reactivity with vinegar

7. Density Density is the amount of mass per unit of volume.
Density can be used to identify a substance.
The density of water is 1.0g/mL

8. Density Calculations Calculations:
Density = Mass / Volume
Density = Mass
Volume
Ex: A cube has a mass of 4.0 g and occupies a volume of 2.0 ml. What is the DENSITY
Density = 4.0 g / 2.0 ml
Density = 2.0 g/ml

9. More Density Calculations
Ex: A liquid has a mass of 25.0 g and a volume of 5.0 mL.
Density = Mass / Volume
Density = 25.0 g / 5.0 ml
Density = 5.0 g/ml

10. Try these density problems in notebook…
100 grams of a liquid completely fill a 200 mL bottle. What is the density of the liquid?
A scientist puts 50 grams of a substance into a 100mL flask. What is the density of the liquid?
A piece of silver has a mass of 2800 grams and occupies a volume of 266 mL. What is the density of silver?
A student pipets 5.00 mL of ethanol into a flask weighing grams. Calculate the density of ethyl alcohol
A block of copper weighs 453 g and is placed into a solution occupying a volume of 525 mL, what is the density?

11. Review
100 grams of a liquid completely fill a 200 mL bottle. What is the density of the liquid?
D = mass/volume = 100g / 200mL = 0.50 g/mL
A scientist puts 50 grams of a substance into a 100mL flask. What is the density of the liquid?
D = mass/volume = 50g / 100mL = 0.50 g/mL
A piece of silver has a mass of 2800 grams and occupies a volume of 266 mL. What is the density of silver?
D = mass/volume = 2800g / 266mL = g/mL
A student pipets 5.00 mL of ethanol into a flask weighing grams. Calculate the density of ethyl alcohol ?
D = mass/volume = 15.25g / 5.00mL = g/mL
A block of copper weighs 453 g and is placed into a solution occupying a volume of 525 mL, what is the density?
D = mass/volume = 453g / 525mL = 0.86 g/mL

12. Homework
HOMEWORK: Section Review
Page 52
Numbers 1  6

13. Achieve 3000 Log on to: www.achieve3000.com
Read the homepage article “Soccer Star Keeps Giving”
Read the mail article under the subject: Physical Science 2/21 – “Turn it Down”
HOMEWORK: Section Review
Page 52
Numbers 1  6