Unit A: Mix and Flow of Matter

Question 1

What does WHMIS stand for?

Answer 1

Workplace, Hazardous, Materials, Information, Systems

Question 2

What is a Hazard Symbol?

Answer 2

A sign or symbol showing that there is a warning

Question 3

What is fluid?

Answer 3

Anything that has no shape and can flow

Question 4

What is a slurry?

Answer 4

A mixture of water and solids used to transport

Question 5

What is the difference between Pure Substances and Mixture?

Answer 5

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

Question 6

What is Mechanical Mixture?

Answer 6

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

Question 7

What’s another way to call a Mechanical Mixture?

Answer 7

Heterogeneous Mixture

Question 8

What is a Solution?

Answer 8

A substance that looks like one mixture

Question 9

What’s another way to call a Solution?

Answer 9

Homogeneous Mixture

Question 10

Define suspension

Answer 10

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

Question 11

What is a colloid?

Answer 11

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

Question 12

What is concentration?

Answer 12

The amount of solute dissolve in a specific amount of solvent

Question 13

What is the difference between Solute and Solvent?

Answer 13

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

Question 14

What solution has a LARGE amount of solute in the solvent

Answer 14

Concentrated Solutions

Question 15

What solution has a SMALL amount of solute in the solvent

Answer 15

Diluted Solutions

Question 16

How do you measure concentration?

Answer 16

Units = g/mL

Question 17

What is solubility?

Answer 17

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

Question 18

What is an Unsaturated solution?

Answer 18

solutions in which more solute can dissolve

Question 19

What is a Saturated

Answer 19

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

Question 20

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

Answer 20

Type of solute, Type of solvent, Temperature

Question 21

What is viscosity?

Answer 21

A measure of how quickly a fluid flows

Question 22

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

Answer 22

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

Question 23

How does temperature affect viscosity?

Answer 23

When the temperature increases the viscosity decreases

When the temperature decreases the viscosity increases

Question 24

What is the definition of density?

Answer 24

The amount of matter in a given volume

Question 25

What is the ratio for density?

Answer 25

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

Question 26

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

Answer 26

WATER!

Question 27

What happens when something is LESS dense than water?

Answer 27

It floats

Question 28

What happens when something is MORE denser than water?

Answer 28

It sinks

Question 29

What happens when something has the same density as water?

Answer 29

It will be suspended in the middle

Question 30

For liquids density units are?

Answer 30

g / ml

Question 31

For solids density units are?

Answer 31

g / cm3

Question 32

What happens when the temperature decreases?

Answer 32

When the temperature decreases, density usually increases.

Question 33

What happens when the temperature increases?

Answer 33

When the temperature increases, density usually decreases.

Question 34

What is buoyancy?

Answer 34

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

Question 35

What is the buoyant force?

Answer 35

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

Question 36

What is compressibility?

Answer 36

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.