Gen Chem

Question 1

pure substance

Answer 1

cannot be

further broken down or purified by physical means

Question 2

mixtures

Answer 2

are combinations of two or more pure substances

in which each substance retains its own composition and properties.

Question 3

homogeneous mixture

Answer 3

is a type of mixture that has uniform composition and properties. the components cannot be distinguished from each other.

Question 4

Homogeneous mixtures are also called

Answer 4

solutions

Question 5

heterogeneous mixture

Answer 5

mixture has components distinguishable from one another,

Question 6

solvent

Answer 6

able to dissolve other substances ex. water, ethanol

Question 7

solute

Answer 7

substance that is dissolved in a solvent ex. salt, sugar

Question 8

Types of Solutions

Answer 8

solid, liquid, and gaseous solutions.

Question 9

Liquid solutions

Answer 9

are solutions wherein the solvent is in the liquid phase.

Question 10

Solid solutions

Answer 10

are solutions wherein the solvent is in the solid phase.

Question 11

Gaseous solutions

Answer 11

are solutions wherein the solvent is in the gaseous phase. air, oxygen, carbon dioxide

Question 12

suspension

Answer 12

is a type of heterogeneous mixture in which the solute particles do not
dissolve, ex. sand in water, bread crumbs in oil

Question 13

colloid

Answer 13

is a heterogeneous mixture in which a microscopically dispersed substance, ex. milk, mayo, butter

Question 14

Gaseous colloids

Answer 14

are colloids having the dispersing medium in the gaseous phase. ex.beaten egg white, shaving cream, Whipped cream are examples of the form, fog and clouds liquid and gas.

Question 15

liquid colloids

Answer 15

are colloids having the dispersing medium in the liquid phase.

Question 16

example liquid sol

Answer 16

ex. ink

Question 17

solid colloids

Answer 17

are colloids having the dispersing medium in the solid phase. ex. Solid aerosol smoke, dust in air,
Styrofoam gas is suspended in a solid polymer matrix of
polystyrene

Question 18

Evaporation

Answer 18

Evaporation is the phase transition of matter from liquid to vapor. ex. saltwater to salt

Question 19

Recrystallization

Answer 19

procedure for purifying compounds

Question 20

Distillation

Answer 20

is a separation technique that is applied for homogeneous liquid-liquid
mixtures. ex. Alcoholic beverages are made through distillation

Question 21

chromatography

Answer 21

a process in which a chemical mixture carried by a liquid or gas is separated into components as a result of differential distribution of the solutes as they flow around or over a stationary liquid or solid phase. ex. Creating vaccinations, food/beverage testing, drug/forensic testing, resin

Question 22

Manual picking

Answer 22

using your hands or

tongs can be done in separating the components

Question 23

sieving

Answer 23

takes advantage of
the difference in particle size of solids
ex. sifting a cup of flour

Question 24

Filtration

Answer 24

is a process of separating solids from liquids by

allowing the mixture to pass through a filtering material

Question 25

Sedimentation

Answer 25

is the process in which suspended solids will eventually

separate from liquids by gravity. ex. mixture of sand and water, sand settles down at the bottom

Question 26

Decantation

Answer 26

is the removal of the liquid component from the solid

sediment. ex. mixture of water and oil is present in a beaker

Question 27

Centrifugation

Answer 27

is a process in which the suspension is rotated at very high speeds ex. extraction of fat from milk

Question 28

What are some important applications of mixture

separations in commercial products?

Answer 28

petroleum industry
water filtration system
blood sample after centrifugation
medicine tablets must first be purified before mixing
with other components to form a solid homogeneous mixture.

Question 29

Particles Composing Matter

Answer 29

atom
molecule
ion

Question 30

states of matter

Answer 30

solid, liquid, gas

Question 31

Physical properties

Answer 31

are the things that can be easily observed in a object for example its color and size

Question 32

Extensive properties

Answer 32

do depend on sample size

Question 33

Intensive properties

Answer 33

do not depend on the quantity of matter