C4A: Physical and Chemical Properties
and Changes
C4B: Intensive and Extensive Properties
1
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
C4A: Physical and Chemical Properties and Changes C4B, Study notes of Physical Chemistry
Change in state (water cycle):. Evaporation, condensation, melting, freezing, boiling, sublimation. - Change in size and shape:.
Typology: Study notes
2021/2022
1 / 12
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download C4A: Physical and Chemical Properties and Changes C4B and more Study notes Physical Chemistry in PDF only on Docsity!
C4A: Physical and Chemical Properties
and Changes
C4B: Intensive and Extensive Properties
1
Physical Property
-^ can be
observed
or
measured
without
2
-^ can be
observed
or
measured
without
changing the substance’s composition.
- They can be used to identify substances.
Examples:
color, odor, mass, volume,density, boiling point, buoyancy, viscosity,solubility
Classify as physical property (PP) or
chemical property (CP)
Odor ____Density ____ solubility ____flammability ____
physical change
-^ does not alter the chemical identity of asubstance. No new substances are formed. __ You can often undo a physical change._ Examples: -^ Change in state (water cycle):
5
-^ Change in state (water cycle):
Evaporation, condensation, melting, freezing,boiling, sublimation
-^
Change in size and shape
tearing, drying clothes, pulverizing, dissolving,
Chemical Change
(chemical reaction)
-^ occurs when substance/s change into one or more different
substance/s.
-^
You can’t undo a chemical change.
-^
The substance before the change is called a reactant
-^
The substance after the change is called a product.
-^
The products have different physical and chemical
7
-^
The products have different physical and chemical properties from those of the reactants
Examples:
combustion, oxidation (rusting),
digestion, photosynthesis,reactivity
( metal reacting with acid)
Indicators of chemical change Presence of one or more of the following may
mean a chemical change.
* Change in
color
* Change in
odor
8
* Formation of
gas bubbles
* Formation of
heat or change in temperature
* Formation of
precipitate
- a solid that forms
when two liquid solutions are^ mixed
Intensive property^ - depends on the nature/identity
of the substance.
- different amounts of the same substance have