W1 General Chemistry

Question 1

Coined the term “Atomos” aka ____

Answer 1

Democritus,
“discontinuous matter”
“indivisible”

Question 2

Said “There can be no ultimately indivisible particles”

Answer 2

PLATO AND ARISTOTLE

Question 3

Believed that matter did not exist as a discrete units and
atoms are considered continuous particles

Answer 3

PLATO AND ARISTOTLE

Question 4

Was the first component of the atom to be identified

Answer 4

ELECTRONS

Question 5

Discovered Electrons

Answer 5

Joseph John Thomson

Question 6

Component of a nucleus, discovered by Eugene Goldstein

Answer 6

PROTONS

Question 7

Components of nucleus, discovered by James Chadwick in 1932

Answer 7

NEUTRONS

Question 8

Atoms is a spherical mass containing electrons and
that this spherical mass is positive but is made neutral by the electrons embedded in it.

Answer 8

THOMSON MODEL

Question 9

It is based on additional experimental evidence of “alpha scattering
experiments”.

Answer 9

RUTHERFORD MODEL

Question 10

In this model, protons
are in the nucleus and
the electrons are in
the orbital motion
around the nucleus.

Answer 10

Bohr Model of an
Atom

Question 11

In this model, the
atoms are in elliptical
orbits of increasing
number.

Answer 11

Rutherford-Bohr Model

Question 12

This principle states that simultaneous
determination of the exact position and exact momentum of electron is impossible.

Answer 12

Heisenburg Uncertainty Principle

Question 13

In this model, the nucleus is a
single cluster of particles at
the center of the atom while
the electrons are everywhere

Answer 13

Wave Mechanical Atom

Question 14

This theory makes the assertion that
electromagnetic radiation like X-rays, gamma
rays, radio waves and light rays are made up
of small bits of energy.

Answer 14

Schroedinger “Quantum Model”

Question 15

This theory states that the number of orbital
types in a given shell is equal to the shell
number.

Answer 15

Orbital Theory

Question 16

orbitals with the same electron of same energy level

Answer 16

Hund’s Rule of Maximum Multiplicity

Question 17

states that atoms may be built by progressively filling the main energy levels, sub levels and orbitals with electrons according to increasing level

Answer 17

AUFBAU PRINCIPLE

Question 18

is equal to the number of protons and electrons

Answer 18

ATOMIC NUMBER

Question 19

Total number of protons and neutrons on the nucleus of nucleons

Answer 19

MASS NUMBER

Question 20

atoms of the same element with the same atomic number, but different mass number

Answer 20

ISOTOPES

Question 21

Has the same number of protons and electrons but diff number of neutrons

Answer 21

ISOTOPES

Question 22

atoms of different elements having the same number of neutrons

Answer 22

ISOTONES

Question 23

atoms of different elements having the same atomic mass

Answer 23

ISOBARS

Question 24

It is a charged species, an atom or a molecule, that has lost or gained one or more electrons

Answer 24

IONS

Question 25

it is the smallest indivisible portion of a pure chemical substance that has its unique set of chemical properties, that is, its potential to undergo a certain set of chemical reactions with other substances

Answer 25

MOLECULES

Question 26

- a chemical compound always contains exactly the same proportion of elements by mass.

Answer 26

Law of Definite Proportions

Question 27

- when two elements combine to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers

Answer 27

Law of Multiple Proportions

Question 28

Elements combine in the ratio of their combining weights or chemical equivalents; or in some simple multiple or sub-multiple of that ratio.

Answer 28

Law of Combining Weights

Question 29

Other names for Law of Combining Weights

Answer 29

Also called the Law of Reciprocal Proportions or Law of Equivalents

Question 30

Are made up of one kind of only one kind of matter possessing a definite, fixed and unvarying compositions -has unique set of properties

Answer 30

PURE SUBSTANCES

Question 31

simplest form of substance that cannot be decomposed by chemical means; building blocks of matter

Answer 31

ELEMENTS

Question 32

elements that has a characteristic of brilliant, luster, ductility, malleability, and good conductors of heat and electricity

Answer 32

METALS

Question 33

possess characteristics opposite to metals

Answer 33

NON-METALS

Question 34

possess characteristics of metals and non-metals

Answer 34

METALLOIDS

Question 35

are substances whose molecules are made up of two or more kinds of atoms -combined in def proportion

Answer 35

COMPOUNDS

Question 36

formed when there is a transfer of e-

Answer 36

IONIC COMPOUND

Question 37

formed when e- are shared

Answer 37

COVALENT COMPOUND

Question 38

formed by interaction between elements which are usually metallic but the resulting compound behaves just like an ordinary metal

Answer 38

METALLIC COMPOUND

Question 39

○ any of the large class of chemical compounds in which one or more atoms of carbons are covalently linked to the atoms of another elements

Answer 39

ORGANIC COMPOUND

Question 40

○ these are combined with definite proportions of two elements

Answer 40

INORGANIC COMPOUND

Question 41

An equation that will provide the starting point for modern treatments of non-ideality of electrolytes solution

Answer 41

DEBYE-HUCKEL THEORY

Question 42

Substances that are resistant to pH

Answer 42

BUFFERS

Question 43

maximum amount of either the strong acid or the strong base that can be added before a significant

Answer 43

BUFFER CAPACITY

Question 44

combination of any positive ion and negative ion except for OH; formed by the combination of acids and bases ○

Answer 44

SALTS

Question 45

Acid and bases with a product of salt and water

Answer 45

NEUTRALIZATION

Question 46

Substances that consists oxygen and other elements

Answer 46

OXIDES

Question 47

-substances that are uniform in appearance and has the same properties and composition throughout one phase and has only color -particles distributed uniformly

Answer 47

HOMOGENOUS

Question 48

 consists of two or more distinct portions  particles distributed non-uniformly  can be separated mechanically

Answer 48

HETEROGENOUS

Question 49

 visible light  solid and liquid

Answer 49

SUSPENSION

Question 50

the liquids are colloidally suspended in another liquid samples

Answer 50

EMULSIONS

Question 51

Scattering of light by particles in a colloid or suspension

Answer 51

TYNDALL EFFECT

Question 52

States that matter can either be created nor destroyed

Answer 52

Law of Conservation of Mass

Question 53

States that matter can either be created nor destroyed

Answer 53

Law of Conservation of Mass