Chemistry Notes: Extensive vs. Intensive Properties, Chemical & Physical Properties, Density
Mass is an _________________ property—a property that depends on the ____________________ of
stuff you have. Other properties that are extensive would include ____________________, shape, etc.
_______________________ properties are ones that only depend on what ______________ of stuff you
have, like color, etc.
Intensive or Extensive?
•
Mass
__________________________
•
Color
__________________________
•
Density __________________________
•
Shape __________________________
•
Melting point
•
Texture __________________________
•
Flammable
__________________________
__________________________
PHYSICAL PROPERTIES
A quality or condition of a substance that can be observed or measured without changing the
substance’s ____________________________
What are some examples?
STATES OF MATTER
Matter’s state is a _______________________ property
SIDENOTE: A gaseous substance
that is found as a solid or liquid at room temperature is called _____________________.
PHYSICAL CHANGES
A physical change is one that does not involve __________________ the chemical composition.
CHEMICAL REACTIONS
The ability of a substance to react and form new substances is called a
_________________________ ________________________.
In a ______________________ ____________________________, one or more substances
change into new substances.
A reaction starts with the ____________________________, and the substances formed are
called ________________________.
4 CLUES TO CHEMICAL REACTION
___________________, ____________________, ____________________ & _______________
CHEMICAL OR PHYSICAL CHANGE?
•
Baking cookies __________________________
•
Boiling water
•
Dissolving salt __________________________
•
Burning firewood
•
Milk spoiling
__________________________
•
Metal rusting
__________________________
•
Tearing paper __________________________
•
Melting ice
__________________________
__________________________
__________________________
Density
density – the _______________ of an object per unit _____________________
ex) the density of a substance describes how ___________________ packed the molecules are
density =
D=
Important Units
Mass is measured in ____. Liquid volume is measured in ___. Solid volume is measured in ____.
Liquid density is measured in ________. Solid density is measured in ________.
An object will ___________ if it is less dense than the liquid it is immersed in.
ex) _________ floats on water because oil is less dense than water
An object will ___________ if it is more dense than the liquid it is immersed in.
ex) a rock will sink in water because it is ____________ dense than water
QUESTION #1: Why does diet coke float in water, but regular coke sinks in water?
QUESTION #2: Which is more dense: ice or water?