Mix and Flow of Matter Unit Test

Question 1

What are the properties of fluids?

Answer 1

• density
• buoyancy
• viscosity
• compressibility

Question 2

What is a fluid?

Answer 2

Anything that has no fixed shape and can flow as a liquid an a gas

Question 3

What is a heterogeneous mixture?

Answer 3

A mixture where all parts are can be seen

Question 4

What is a homogeneous mixture?

Answer 4

A mixture where the different substances can’t be seen and the mixture looks like all one substance

Question 5

What is a suspension?

Answer 5

A cloudy mixture where the particles eventually settle out but are temporarily suspended

Question 6

What is mechanical mixture?

Answer 6

a heterogeneous mixture where all the different parts can easily be seen

Question 7

What are the different kinds of hetero heterogeneous mixture’s?

Answer 7

• mechanical mixture

- suspension

Question 8

What is a colloid?

Answer 8

A cloudy mixture where the particles are too small separate out they are mixed together but not dissolved

Question 9

What is the solution?

Answer 9

A very well mixed mixture where the particles are dissolved

Question 10

What are examples of homogeneous mixture’s?

Answer 10

• colloid

- solution

Question 11

In a solution what are the solute and the solvent?

Answer 11

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

Question 12

What is concentration

Answer 12

The amount of solute dissolved in a certain amount of solvent

Question 13

What is the difference between concentrated and diluted solution

Answer 13

A solution that is concentrated has a large amount of solute in a small amount of solvent a diluted solution has a small amount of solute solute and a large amount of solvent

Question 14

What is the difference between a saturated and unsaturated solution

Answer 14

Unsaturated solution is a solution or more solute can be dissolve a saturated solution is were no more solute can be dissolved

Question 15

What is a supersaturated solution?

Answer 15

Is where there is more solute than the solvent can dissolve

Question 16

What is solubility?

Answer 16

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

Question 17

What are the factors that affect solubility?

Answer 17

• temperature
• type of solute
• type of solvent

Question 18

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

Answer 18

• Temperature
• The size of the particles( sugar cubes vs Powdered sugar)
• Agitation of the solvent( stirring it)

Question 19

What is viscosity?

Answer 19

How quickly a fluid can flow based on the fluids internal friction that keeps it from Flowing *A fluid with a high viscosity will flow slower and a fluid with the low viscosity will flow faster

Question 20

What is a flow rate?

Answer 20

How fast of fluid can slow you can calculate this by dividing the amount of fluid by how long it takes in seconds to flow

Question 21

How does temperature affect viscosity?

Answer 21

As you increase the temperature the fluid it becomes less viscous and flows easier and faster

Question 22

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

Answer 22

In the particle model matter liquid is made of particles that can slide past each other when energy or heat is added to the liquid the particle slide and roll more quickly as results of this change the fluid flows faster and viscosity will decrease

Question 23

What is density?

Answer 23

Density is the amount of matter in a given volume

Question 24

How do you calculate density?

Answer 24

Divide your mass by your volume
M
–
V

Question 25

How do you calculate mass?

Answer 25

Times you density by your volume

D x V

Question 26

How do you calculate volume?

Answer 26

Divide your mass by density
M
— = V
D

Question 27

How do you calculate pressure?

Answer 27

Force divided by area , written in pascals Pa
Force (N)
———– = Pa
Area cm2
If the area is in centimetres you must change it to metres divide your area by 10,000 and then divide your force by that number

Question 28

What is pressure?

Answer 28

The amount of force applied on a certain area, measured in pascals Pa

Question 29

How to steps affect pressure?

Answer 29

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

Question 30

What is buoyancy

Answer 30

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

Question 31

What is a buoyant force

Answer 31

An upward force that a fluid exerts and on an object and pulls the object away from gravity

Question 32

What is positive buoyancy

Answer 32

When an object is less dense than the fluid around it so it floats

Question 33

What is negative buoyancy?

Answer 33

And object is more dense than the fluid around it so it sinks

Question 34

What is neutral buoyancy

Answer 34

The equal tendency for an object to float and sink

Question 35

What is a slurry?

Answer 35

A mixture of water and a solid like dirt and water, slurries can move solids in water