Thursday, February 17, 2011

Mixtures

Homogeneous


The particles are evenly distributed

Heterogeneous

The particles remain thoroughly mixed throughout the mixture while the liquid is being mixed, but later settle to the bottom.



examples:

anything with "shake before use"

salad dressing

orange juice with pulp

children's medicine

* these are all known as suspensions



suspensions

after the particles settle out, the tyndall effect may be seen in the top liquid portion





Homogenous Mixtures

Solutions

are too small to reflect light or settle out
No tyndall effect
Examples:
Coke
Kool aid
Lemonade

Colloid
Are big enough to reflect light but not big enough to settle out.
Tyndall effect is seen

Examples:
milk solution


Today Mrs. Mandarino gave us our test back and our revised grade print outs. We began the new unit taking notes on mixtures. We learned there are two types of mixtures:


Kendall K
Mixtures

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