Unit A: Mix And Flow Of Matter

Question 1

WHMIS stands for..

Answer 1

Workplace Hazardous Material Information System

Question 2

Name 6 examples of WHMIS

Answer 2

Reactive Material
Flammable Material
Poisonous Material
Electrical Hazard
Explosive Hazard
Corrosive Material
Oxidizing Material
Compressed Gas
Biohazardous Infectious Material
Irritant Hazard

Question 3

What is Particle model of matter?

Answer 3

A model that describes the arrangement and movement of particles in a substance.

Question 4

What is the useful property of fluids?

Answer 4

Involved in transportting, processing, and using materials

Question 5

Which is more compressible, gas or liquid?

Answer 5

Gas

Question 6

Why are gases more compressible?

Answer 6

There is more space inbetween the gas particles.

Question 7

Classify solid matter.

Answer 7

Keeps its shape and keeps its total volume.

Question 8

Classify liquid matter.

Answer 8

Takes the shape of it’s container, keeps its total volume.

Question 9

Classify gas matter.

Answer 9

Takes the shape of it’s container, changes volume to fill it’s container.

Question 10

What are the 2 classifications that matter is divided into?

Answer 10

Pure substances and mixture.

Question 11

What are pure substances?

Answer 11

made of only one kind of matter, cannot be seperated into different substances.

Question 12

What are mixtures?

Answer 12

combination of different substances in which they are easily seen.

Question 13

Define a heterogenous mixtures.

Answer 13

a mixture that you can see the different substances that make up the mixture

Question 14

Define homogenous mixtures.

Answer 14

mixture of 2 or more pur substances that looks like one substance.

Question 15

Dissolving one substance into another makes a..?

Answer 15

Solution.

Question 16

Define solute and solvent.

Answer 16

Solute- substance that dissolves in a solvent to form a solution.
Solvent- substance that dissolves a sulute to form a solution.

Question 17

What is the solution called when large amounts of solute are in a solution?

Answer 17

A concentrated solution.

Question 18

Define concentration.

Answer 18

the amount of solute dissolved in a specific amount of solvent in a solution.

Question 19

What is the formula for concentration?

Answer 19

g/mL or kg/L (kg = 1000g, L = 1000mL)

Question 20

What is solubility?

Answer 20

The ability to dissolve.

Question 21

What are the factors that influence solubility?

Answer 21

Temperature, pressure, molecule size, agitation.

Question 22

What is saturation point?

Answer 22

The point at where a substance can no longer absorb/dissolve solute.

Question 23

Define viscosity. How does temperature effect it?

Answer 23

The measure of a fluid’s resistance to flow. The higher the temperature, the less vicious, the lower the temp, the more viscious.

Question 24

What is flow rate? What is the formula?

Answer 24

the amount of fluid that flows in a given time across a given distance. (distance/time.)

Question 25

What is density? How do you calculate it?

Answer 25

the amount of matter in a given volume or mass per unit of volume. (D = M/V)

Question 26

Describe pressure.

Answer 26

the amount of force pushing against a given area.

Question 27

What is buoyancy?

Answer 27

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