CHAPTER 1

Question 1

Scientists involved in 5th Century B.C

Answer 1

Leucippus, Democritus, Roman Lucretius

Question 2

uncuttable

Answer 2

atomos

Question 3

adopted atomic theory in the 5th century

Answer 3

Roman Lucretius

Question 4

discovered atoms in 5th century

Answer 4

Leucippus and Democritus

Question 5

18th Century

Answer 5

atomic theory was revived, nature of gases

Question 6

matter is made up of tiny invisible particles

Answer 6

Atomic theory

Question 7

Scientists involved in 1808

Answer 7

John Dalton, Lothar Meyer and Dmitri Mendeleev

Question 8

He published the atomic theory

Answer 8

John Dalton

Question 9

He was one of the pioneers in developing the first periodic table of chemical elements.

Answer 9

Lothar Meyer

Question 10

first to device periodic table according to atomic weight

Answer 10

Lothar Meyer and Dmitri Mendeleev

Question 11

atoms chemically combine in simple ratios to form compounds

Answer 11

Law of Multiple Proportions

Question 12

Scientist involved in 1913

Answer 12

Henry Gwyn Jeffrys Mosely

Question 13

He found out that the nucleus is equal to positive charges, characterized and arranged atoms by increasing atomic number through the use of x-ray spectra

Answer 13

Henry Gwyn Jeffrys Mosely

Question 14

atomic structure finally finished through the discovery of neutron

Answer 14

1932

Question 15

2 Views on the State of Matter

Answer 15

Macroscopic and Microscopic Level

Question 16

level at which you can directly observe through the use of your senses

Answer 16

Macroscopic Level

Question 17

level at which it cannot be observed

Answer 17

Microscopic Level

Question 18

particles are pulled into an organized, rigid structure of repeating structure

Answer 18

Crystal Lattice

Question 19

Types of Matter

Answer 19

Liquid, solid and gas

Question 20

Properties of Matter

Answer 20

Physical and Chemical

Question 21

Physical Properties of Matter

Answer 21

directly observed; color, shape, mass, volume, boiling point, ductility, malleability

Question 22

Chemical Properties of Matter

Answer 22

affects chemical composition; toxicity, oxidation, heat of combustion, flammability, reactivity, chemical stability

Question 23

Types of Physical Matter

Answer 23

Intrinsic and Extrinsic

Question 24

does not depend on amount of matter like boiling point, temperature, luster, hardness

Answer 24

Intrinsic/Intensive

Question 25

depends on amount of matter like volume mass size, weight, length

Answer 25

Extrinsic/Extensive

Question 26

sample of matter where chemical and physical properties remain the same throughout the sample

Answer 26

Substance

Question 27

building blocks of elements, smaller units of matter

Answer 27

Atoms

Question 28

chemical substances that cannot be transformed or broken down through a chemical reaction

Answer 28

Elements

Question 29

composed of the same proportion of elements

Answer 29

Molecules

Question 30

composed of molecules

Answer 30

Compounds

Question 31

non bonded, diverse molecules or elements

Answer 31

Mixture

Question 32

composition is uniformly mixed particles of the solute are spread evenly throughout the solvent

Answer 32

Homogenous

Question 33

non uniform mixture

Answer 33

Heterogenous

Question 34

mixtures that do not spontaneously separate or settle as time passes, cannot be completely separated by filtering

Answer 34

Colloidal Mixtures

Question 35

method of separating component of mixture through WIND

Answer 35

Winnowing

Question 36

method of separating component of mixture through MAGNET

Answer 36

Magnetism

Question 37

method of separating component of mixture through GRAVITY

Answer 37

Sedimentation

Question 38

method of separating component of mixture, separation of liquid and liquid

Answer 38

Decantation

Question 39

method of separating component of mixture through, gravity: particles move together

Answer 39

Flocculation

Question 40

method of separating component of mixture through chemical components: COAGULATING AGENTS

Answer 40

Coagulation

Question 41

method of separating component of mixture, filtering liquid

Answer 41

Filtration

Question 42

method of separating component of mixture, separate soluble solid to liquid

Answer 42

Evaporation

Question 43

method of separating component of mixture through HEAT

Answer 43

Distillation

Question 44

Types of Distillation

Answer 44

a. simple distillation
b. steam
c. fractional
d. vacuum

Question 45

Types of Chromatography

Answer 45

a. adsorption
b. partition
c. ion exchange