1. Durdana Saleem
Properties of matter
Properties of matter

2. General Properties of Matter
Matter is anything that has mass and volume
Everything is made of matter

3. video What are properties? Characteristics used to describe an object
Ex: color, odor, shape, size, texture , hardness
video

4. General Properties of matter
Mass, weight, volume, and density
Properties are used to identify a substance

5. What is mass? Mass is the amount of matter in an object
Mass is constant
Mass is also the measure of inertia

6. Inertia is the resistance of an object to changes in its motion
What is inertia?
Inertia is the resistance of an object to changes in its motion
The more mass the greater the inertia

7. Questions How is mass related to inertia?
Why are properties of an object important?
Which object has more inertia, an empty wagon or one loaded with rocks? Why?
What does a seatbelt do for a passenger when a car stops suddenly?

8. Force and inertia
When an object is at rest, a force is needed to overcome the inertia to make it move and to stop the object’s motion.

9. Question
Why would the passenger move forward without the restraining force of the belt?
What would stop a passenger if the seatbelt were not in place?
What other safety features are present in a car in response to a person’s inertia in a moving vehicle?
Why can’t you feel the attraction between you and other objects the same way you are pulled toward Earth?

10. Weight The measure of the force of gravity on the mass of an object
Weight changes with gravity
The metric unit for weight is a Newton (N)

11. Weight formula 1 kg = 2.2 pounds
Weight is mass times gravity (9.8 m/s2)
W= m x g
What is your mass?
What is your weight in Newton's?

12. What is gravity? The force of attraction between objects is gravity.
All objects exert a gravitational force on each other.

13. Gravitational pull
The greater the mass of an object the greater the gravitational force.
Question
Why can’t we feel the pull of gravity from Jupiter even though it is so massive?

14. The pull of gravity weakens as the distance between objects increases
What affects gravity?
The pull of gravity weakens as the distance between objects increases
gravity depends on mass and distance

15. Gravity
The further an object is from the center of the earth, the less the object will weigh.
Question
Would you weigh less, more, or the same on top of Mount Everest?

16. Question
The moon is smaller than the earth. How would your weight be different on the moon?
What are three properties of matter related to mass?
What is density and how is it calculated?

17. Density Objects with densities less than 1.0 g/ml will float on water
The density of water is 1.0 g/ml
Objects with densities greater than 1.0 will sink in water.

18. Ice Ice floats therefore it is less dense than water
Ice mostly remains underwater with only a portion of it being exposed

19. Astronomy fact!
The planet Saturn has a density of less than 1.0 g/ml. If there was an ocean big enough to hold it, it would float!
Calculations
If 96.5 grams of gold has a volume of 5 cubic centimeters, what is the density of gold?

20. Calculation
If 96.5 g of aluminum has a volume of 35 cm3, what is the density of aluminum?
If the density of a diamond is 3.5 g/cm3, what would be the mass of a diamond whose volume is 0.5 cm3?

21. What is specific gravity?
A comparison of the density of a substance and the density of water is specific gravity.
Question:
How is density different from specific gravity?

22. Phases of matter Four phases of matter: solid, liquid, gas, and plasma
solids have a definite shape and volume
physical property
Physical properties are those that can be observed without changing the identity of the substance