Unit 1 Topic Visxosity And Densoty

Question 1

Define viscosity

Answer 1

The thickness or thinness of a fluid

Question 2

define dehydration to separate mixtures.

Answer 2

uses evaporation to remove water from the solution.

Question 3

define distillation

Answer 3

liquids are separated based on their boiling points then then condense the vapor to remove it.

Question 4

what is hydrocarbons made of

Answer 4

simply hydrogen and carbons.

Question 5

how do you process petroleum

Answer 5

use fraction distillation which separates liquid based on their boiling points and then condenses it.

Question 6

define an ore

Answer 6

it is a mineral or a group of minerals that contains a valuable substance.

Question 7

a solid that has a high viscosity has a low flow rate true or false

Answer 7

unanswerable because viscosity is only in liquids and gases.

Question 8

a liquid with a high viscosity has a low (slow) flow rate t/f

Answer 8

true

Question 9

higher temperatures make the viscosity higher t/f explain in liquids

Answer 9

f because when the temperature rises the particles spread apart making the particles flow easier.

Question 10

what happens when you increase the temperature of a gas

Answer 10

the particles become faster making there be more collisions causing the particles to slow down.

Question 11

when you increase the concentration does the viscosity become higher or lower. explain

Answer 11

higher because there are more particles making it harder for each particle to flow.

Question 12

having a higher attractive force makes the viscosity higher t/f explain

Answer 12

t because the particles will want to be closer making it harder for each individual particle to flow.

Question 13

why does having a higher particle size makes the viscosity higher

Answer 13

because it will be more difficult for the particles to flow past each other because each particle will take up more space.

Question 14

define flow rate

Answer 14

a measurement of the time it takes a fluid to get from one point to another.

Question 15

define density

Answer 15

it is the amount of matter in a given volume (how crowded a volume is)

Question 16

what is usually the most dense, least dense, and in the middle for density between solids, liquids, and gases. explain

Answer 16

solids then liquids then gases because in a solid the particles are much closer together and therefore can hold more particles. liquid next because the particles are further apart from a solid and closer than a gas. gas last because the particles are far apart.

Question 17

define mass

Answer 17

measurement of how much matter an object contains.

Question 18

define weight

Answer 18

a measure of how strongly gravity pulls on said matter.

Question 19

define volume

Answer 19

measurement of the amount of space occupied by a substance

Question 20

how do you calculate the density of an object when presented with the volume and mass

Answer 20

mass mass divided by volume
______
volume

Question 21

how do you find the mass if presented with the density and volume

Answer 21

(density) x (volunme)

Question 22

how do you find the volume if presented with the density and mass

Answer 22

mass mass divided by density
_____
density

Question 23

if an object is a liquid and you have a mass of 60G and a volume of 15ML fin the density
show all your work

Answer 23

M=60G 60/15=4 Answer is 4G/ML
V=15ML
D= M/V / means divide.

Question 24

what is the triangle for mass density and volume?

Answer 24

Mass
/
Density x Volume

Question 25

define force

Answer 25

anything that causes change in motion of an object

Question 26

define gravity

Answer 26

natural force that causes an object to move to the center of the earth