chapter 3 probing matter (states, properties, & changes)
TRANSCRIPT
PROBING MATTER
CHAPTER 3
3.1 STATES OF MATTER
MATTER
the material substance of the universe that has mass, occupies space, and is convertible to energy
STATES OF MATTER
solid liquid
gas
SOLID LIQUID GASHas definite
shapeNo definite shape; take the shape of its container
No definite shape; take the shape of its container
Has definite volume
Has definite volume
Has no definite volumeSmall
compressibility
Large compressibilit
y
Small compressibilit
yVery small
thermal expansion
small thermal expansion
moderate thermal
expansion
High densityMedium density Low density
PLASMA It is the fourth state of matter and the most common form of matter in the universe
3.1 PHYSICAL AND CHEMICAL PROPERTIES OF MATTER
PROPERTIES
Are the distinguishing characteristics that we use to identify different samples of matter
Physical Chemical
These are the characteristics that can be observed without changing the substance to another substance
These are the characteristics that can be observed when the substance undergoes a change in its composition
Classify each of the following properties of a substance as physical or chemical.
1) color2) flammability3) odor4) boiling point5) oxidation
ANSWER:1) Physical2) Chemical3) Physical4) Physical5) Chemical
PHYSICAL
COLORMELTING
POINT BOILING POINT
ODOR
TASTESOLUBILITYDENSITY
MALLEABILITY
CHEMICALCOMBUSTION
OXIDATION
3.5CHANGES IN MATTER
CHANGES IN MATTER
Physical Chemical
Takes place without any corresponding changes in composition
Any changes that are accompanied by composition changes
Examples of physical changes:
1) Setting a jelly2) Melting a butter3) Boiling water4) Sawing a board in half5) Breaking a glass
Examples of chemical changes:6) Rusting of a nail7) Baking a cake8) Fermentation of rice wine9) Tarnishing of silver spoon10)Dissolving antacid in water
Identify each of the following as physical or chemical change:
1) Digesting a chocolate bar2) Bleaching a stain3) Chopping a sweet potato4) Developing a polaroid picture5) Inflating a balloon
ANSWERS:6) Chemical7) Chemical8) Physical9) Chemical10)Physical
SOLID GASLIQUID
SUBLIMATION
SOLIDIFICATION
MELTING EVAPORATION
CONDENSATIONFREEZING
SOLID GASLIQUID
1. _________________
6. ____________________
2. ___________ 3. ______________
4. _______________5. _______________