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Science 8A > Unit A: Mix and Flow of Matter > Flashcards

Unit A: Mix and Flow of Matter Flashcards

Remeber this for finals

1
Q

What does WHMIS stand for?

A

Workplace, Hazardous, Materials, Information, Systems

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2
Q

What is a Hazard Symbol?

A

A sign or symbol showing that there is a warning

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3
Q

What is fluid?

A

Anything that has no shape and can flow

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4
Q

What is a slurry?

A

A mixture of water and solids used to transport

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5
Q

What is the difference between Pure Substances and Mixture?

A

Pure Substance is made up of one type of substance while Mixture is made up of multiple substances

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6
Q

What is Mechanical Mixture?

A

You can visually see the different substances that make up the mixture

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7
Q

What’s another way to call a Mechanical Mixture?

A

Heterogeneous Mixture

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8
Q

What is a Solution?

A

A substance that looks like one mixture

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9
Q

What’s another way to call a Solution?

A

Homogeneous Mixture

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10
Q

Define suspension

A

A cloudy mixture in which droplets or tiny pieces of one substance are held within another substance.

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11
Q

What is a colloid?

A

Also a cloudy mixture, but the droplets or tiny pieces are so small that they do not separate out easily

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12
Q

What is concentration?

A

The amount of solute dissolve in a specific amount of solvent

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13
Q

What is the difference between Solute and Solvent?

A

The solute is the substance that dissolves while the Solvent is the substance that does the dissolving

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14
Q

What solution has a LARGE amount of solute in the solvent

A

Concentrated Solutions

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15
Q

What solution has a SMALL amount of solute in the solvent

A

Diluted Solutions

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16
Q

How do you measure concentration?

A

Units = g/mL

17
Q

What is solubility?

A

The mass of solute that can dissolve in a given amount of solvent to form a saturated solution at a given temperature.

18
Q

What is an Unsaturated solution?

A

solutions in which more solute can dissolve

19
Q

What is a Saturated

A

are solutions in which solute can dissolve at a given temperature.

20
Q

Solubility depends on at least 3 factors. Can you name them all?

A

Type of solute, Type of solvent, Temperature

21
Q

What is viscosity?

A

A measure of how quickly a fluid flows

22
Q

What’s the difference between High viscosity and Low viscosity?

A

Fluids with high viscosity do not flow as easily as fluids with a low viscosity.

23
Q

How does temperature affect viscosity?

A

When the temperature increases the viscosity decreases

When the temperature decreases the viscosity increases

24
Q

What is the definition of density?

A

The amount of matter in a given volume

25
Q

What is the ratio for density?

A

Density (d) = Mass (m) / Volume (v)

26
Q

Which fluid is an exception to states of matter vs. density?

A

WATER!

27
Q

What happens when something is LESS dense than water?

A

It floats

28
Q

What happens when something is MORE denser than water?

A

It sinks

29
Q

What happens when something has the same density as water?

A

It will be suspended in the middle

30
Q

For liquids density units are?

A

g / ml

31
Q

For solids density units are?

A

g / cm3

32
Q

What happens when the temperature decreases?

A

When the temperature decreases, density usually increases.

33
Q

What happens when the temperature increases?

A

When the temperature increases, density usually decreases.

34
Q

What is buoyancy?

A

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

35
Q

What is the buoyant force?

A

When an object is in a liquid, the force of gravity pulls it down.

36
Q

What is compressibility?

A

The extent to which a substance (3 states of matter) can be compressed by a force acting on it. Objects under compression tend to deform the shape.

Science 8A (5 decks)

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