Matter, Mixing, and Dissolving
Density
Flow Rate and Viscosity
Buoyancy
Fluid Systems and Pressure
100

Explain how dissolving occurs

The two types of particles must be attracted to each other (L2).

The particles have positive and negatives charges that attract other charges. Example: the negative oxygen on water, attracts the positive sodium on salt. The positive hydrogen attracts the negative chloride from salt.

100
What is the formula to calculate density?
What is mass/ volume (mass divided by volume)
100

What is viscosity?

What is...a fluid's resistance to flow (the thickness or thinness of a liquid)

100
What is the force that opposes buoyancy?
Gravity
100
What is the formula to calculate pressure?
What is pressure = force/area (force divided by area)
200
What is the difference between homogenous and heterogeneous?
What is homogenous - same structure quality or kind. pure heterogeneous - made up of parts. mixed
200
Compare the densities of solids, liquids, and gases
solids - very dense liquids - some what dense gases - not dense
200
How does the viscosity of a liquid change in relation to temperature?
What is when temperature increases the viscosity decreases and as it cools the viscosity increases.
200

If an object floats, is it more or less dense than the liquid?

What is less dense

200
What is a pneumatic system?
What is a system in which a gas, such as air, transmits a force exerted on the gas in an enclosed space?
300
What is the difference between a solvent and a solute?
What is solvent - a substance that dissolves a solute to form a solute solute - a substance that dissolves in a solvent
300
Is density measured in grams, grams/centimetre cubed, or millilitres?
What is grams/centimetre cubed
300

How does particle shape affect the viscosity of a liquid?

The more complex the particle shape, the more the particles get caught on each other. This increases friction, which increases viscosity.

300

How does adding more solute to a solution affect the solution's density?

What is increase the density

300
What is a hydraulic system? (definition)
What is a device that transmits an applied force through a liquid to move something else by means of pressure
400

What state of matter has a indefinite volume and an indefinite shape?

What is a gas

400
What is mass?
What is the amount of matter in a substance
400
Name three items that are considered more viscous:
What is honey, molasses, syrup, car oil, ketchup
400

What was Archimedes able to determine when he placed a crown in water?

What is the volume of the crown

400
What is an example of a hydraulic system and an example of a pneumatic system?
What is garbage trucks (hydraulic) What is buses (pneumatics)
500
Describe the 5 points of the particle theory/model
What is 1. all substances are made up of particles 2. particles in a pure substance are the same. Different pure substances have different particles 3. particles have space between them 4. particles always move and increase/decrease in movement because of temperature 5. particels in a substance attract each other. Strength of attractive forces depends on particle type.
500
Why does an astronauts weight change when on the moons surface but not his mass?
What is because he doesn't have gravity to make mass
500

A fluid travels 30cm in 80 seconds. What is the flow rate?

0.375 cm/sec

500

How are submarines able to float and sink?

What is by removing and adding air/water in the hulls

500

Sort solids, liquids, and gases as compressible or in-compressible. 

In-compressible: solids, liquids

Compressible: gases

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