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Grade 8 Science
Unit 3: Fluids and Viscosity
Chapter 7: Viscosity describes a fluid’s resistance to
flow.
Name:
Section #:
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The Particle Theory of Matter (PTM)....
The 5 main points that make up this theory are:
1.
2.
3.
4.
5.
The 3 states of matter...
Label the states of matter in the following picture.
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Complete the following table.
State Shape Volume Particle
Arrangement
Particle
Movement
Fluids...
Any form of matter that .
The states of matter that can be fluids are: and .
Examples include:
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Viscosity...
A measure of a liquid’s to flow.
The or of a fluid.
A fluid that is viscous is the one that is .
A force that resists movement is .
The greater the friction, the the viscosity.
In a fluid that has high viscosity, the particles are
to each other.
Number the fluids below with 1 being the least viscous and 4 being the most viscous.
Flow Rate...
The speed at which a fluid flows from
Complete Core Lab Activity 7-2B pg. 282-3
corn syrup dishwashing
liquid water
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Factors that Affect Viscosity...
1. Temperature 2. Concentration
Temperature = Viscosity
** The _____________ is true for gases.
The amount of a substance dissolved in a
specific volume.
Concentration = Viscosity
3. Attractive Forces 4. Particle Size
Attractive Forces = Viscosity Particle Size = Viscosity