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Science > Mix And Flow Of Matter Unit Test 8 > Flashcards

Mix And Flow Of Matter Unit Test 8 Flashcards

1
Q

What is a slurry

A

A slurry is a mixture of water and a solid like dirt and water. Slurries can move solids in water

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2
Q

What are properties of fluids

A

Density buoyancy viscosity and compressibility

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3
Q

What is a fluid

A

A fluid is anything that has no fixed shape and can flow usually it is a liquid or a gas

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4
Q

What is a heterogeneous mixture

A

A mixture where the different substances can be seen

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5
Q

What is a homogenous mixture

A

A mixture where the different substances cannot be seen or a mixture that looks like it is all one substance

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6
Q

What is a suspension

A

A suspension is a cloudy mixture where the particles settle out, they are temporarily suspended ex, snow globe

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7
Q

What is a mechanical mixture

A

It is a heterogeneous mixture or a mixture where are the different substances are easy to see ex, salad

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8
Q

What are the different kinds of heterogeneous mixtures

A

Mechanical mixture, suspension

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9
Q

What is a colloid

A

A cloudy mixture where the droplets or tiny particles are too small to separate out. they are mixed together but not dissolved
Ex, paint

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10
Q

What is a solution

A

A very well mixed mixture or particles are small and dissolved ex, sea water

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11
Q

What are examples of homogeneous mixtures

A

Colloids, solutions

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12
Q

In a solution what are the solute and the solvent

A

The solute is the thing that is being dissolved in the solvent is the thing that the solute is dissolved into.

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13
Q

What is concentration

A

Concentration is the amount of solute dissolved into a specific amount of solvent (g/mL).

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14
Q

What is the difference between a concentrated and diluted solution

A

A solution that is very concentrated has a large amount of solute and small amount of solvent. Ex, pop. A diluted solution has a small amount of solute in a large amount of solvent. Ex, tap water

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15
Q

What is the difference between a saturated and unsaturated solution

A

An unsaturated solution is what a solution where more solute can dissolve that any given temperature. A saturated solution is a solution were no more solute can be dissolved at any temperature.

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16
Q

What is a supersaturated solution

A

A supersaturated solution is when there is more solute then the solvent can dissolve

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17
Q

What is solubility

A

The maximum amount of solute you can add at a certain temperature

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18
Q

What are factors that affect solubility

A

Temperature, type of solute, type of solvent

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19
Q

What are factors that affect the rate of dissolving (how fast something dissolves)

A

Temperature, the size of the particles (sugar cube vs powdered sugar), and agitation of the solvent (stirring it)

20
Q

What is viscosity

A

How quickly a fluid can flow determined by a fluids internal friction that keeps it from flowing. A fluid with a high viscosity will have more internal friction and therefore it will flow slower. A fluid with a low viscosity will have less internal friction and will flow faster

21
Q

What is flow rate

A

The flow rate of a fluid is how fast a fluid can flow. you can calculate flow rate by dividing the amount of fluid (mL) by how long it takes in seconds to flow down a ramp

22
Q

How does temperature affect viscosity

A

As the temperature of a fluid increases it becomes less viscous and flows easier

23
Q

How does the particle model of matter relate to temperature affecting viscosity

A

In the particle model of matter a liquid is made of particles that can slide and roll over each other they are spread apart and can move around a lot. When energy or heat is added to the liquid the particles slide and roll more quickly. As a result of this change the fluid flows faster and the viscosity will decrease

24
Q

What is density

A

Density is the amount of matter (mass) in a given volume

25
Q

How do you calculate density

A 
D = M/V 
M = D x V
V = M/D
26
Q

What is a heterogeneous mixture

A

A mixture where the different substances can be seen

27
Q

What is a homogenous mixture

A

A mixture where the different substances cannot be seen or a mixture that looks like it is all one substance

28
Q

What is a suspension

A

A suspension is a cloudy mixture where the particles settle out, they are temporarily suspended ex, snow globe

29
Q

What is a mechanical mixture

A

It is a heterogeneous mixture or a mixture where are the different substances are easy to see ex, salad

30
Q

What are the different kinds of heterogeneous mixtures

A

Mechanical mixture, suspension

31
Q

What is a colloid

A

A cloudy mixture where the droplets or tiny particles are too small to separate out. they are mixed together but not dissolved
Ex, paint

32
Q

What is a solution

A

A very well mixed mixture or particles are small and dissolved ex, sea water

33
Q

What are examples of homogeneous mixtures

A

Colloids, solutions

34
Q

In a solution what are the solute and the solvent

A

The solute is the thing that is being dissolved in the solvent is the thing that the solute is dissolved into.

35
Q

What is the concentration of a solution

A

Concentration is the amount of solute dissolved into a specific amount of solvent (g/mL).

36
Q

What is the difference between a concentrated and diluted solution

A

A solution that is very concentrated has a large amount of solute and small amount of solvent. Ex, pop. A diluted solution has a small amount of solute in a large amount of solvent. Ex, tap water

37
Q

What is the difference between a saturated and unsaturated solution

A

An unsaturated solution is what a solution where more solute can dissolve that any given temperature. A saturated solution is a solution were no more solute can be dissolved at any temperature.

38
Q

How do you calculate pressure?

A

Force (N) divided by Area

10N 5N

  • —- = —- = 5 Pa
    2m2. m2
39
Q

What is pressure?

A

Pressure the amount of force applied to a certain area. It is measured in pascals ( Pa)

40
Q

How does depth affect pressure?

A

The greater the depth the greater the pressure. The weight of the water on top presses down on the water on the bottom creating more pressure.

41
Q

What is buoyancy?

A

The tendency of an object to float when placed in a fluid

42
Q

What is buoyant force?

A

And upward force that a fluid exerts on an object that object from gravitys pull

43
Q

What is positive buoyancy?

A

Positive buoyancy is were an object is less dense than the fluid around it so it floats

44
Q

What is negative buoyancy?

A

When an object is more dense than the fluid around it and it sinks

45
Q

What is neutral buoyancy?

A

Used to describe an object. That has an equal tendency to float and sink

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