1. Chapter 2
Chapter 2

2. Matter Anything that takes up space Anything that has mass
Everything in the universe is some form of matter
Mass is constant; never changes
Measured using a balance
Expressed in grams, kilograms, or milligrams

4. Musical chairs….. Explains physics

5. Volume The amount of space an object occupies
2 objects cannot share the same space at the same time
Liquid volume expressed as milliliters or liters
Measure the volume of a liquid in a cylinder, you read the meniscus.
Solid volume is expressed as cubic centimeters
Length x width x height

6. Mass vs. Weight
Weight is the measure of gravitational force exerted on an object.
Weight changes due to location in the universe
Measure weight using a spring scale
Weight is expressed in newtons
1Kg force =   Newtons
(P.S: Kilogram is a unit of 'Mass', & Newton is a unit of 'Force'.) In simple words, to displace a mass of '1 kg' with an acceleration of 1 m/sec2, We need 1 Newton of Force

7. On earth, mass and weight remain constant so people use the words as if they mean the same thing.
“WEIGHT depends on MASS- They are NOT the same thing”

8. Inertia The tendency of an object to resist change in motion
Mass directly relates to inertia; the more massive the object, the more inertia it has/needs to move

9. Physical Properties
Identifiers of an object that can be observed or measured without changing the matter’s identity.
Example: thermal conductivity; state; density; solubility; ductility; malleability; volume; mass; size; color…
PHYSICAL CHANGES DO NOT FORM NEW SUBSTANCES!

11. Density Mass divided by volume Units: Density of water is 1
Solid : g/cm3
Liquid: g/ml
Density of water is 1
Anything over 1 will sink
Anything under 1 will float

13. States of Matter

14. There is a 4th state of matter called PLASMA
There is a 4th state of matter called PLASMA. Intense heat is needed to “excite” the atoms to produce this state.
video of plasma

15. Chemical Properties
Describes matter based on its ability to change into new matter that has different properties.
Examples: flammability; reactivity

16. Chemical Change
One or more substances are changed into new substances that have new and different properties
NOT THE SAME AS CHEMICAL PROPERTIES
Chemical properties describe which changes will occur and which will not occur.
Chemical changes is the process of the transformation.