QUIZ 1

Question 1

deals with the study of MATTER

Answer 1

Chemistry

Question 2

anything that has a mass and takes up a space

Answer 2

Matter

Question 3

all matter is composed of ??

Answer 3

elements

Question 4

it is the smallest unit of matter that is composed of three-sub atomic particle

Answer 4

Atom

Question 5

Every atom in an element has an equal number of ??

Answer 5

protons and electrons, and is electrically balanced or neutral

Question 6

Every atom has an energy, or the ability to do work. This energy (chemical energy) comes from ??

Answer 6

electrons in the atom

Question 7

a substance that can not be broken down into simples substances. Ex: Oxygen, Hydrogen, Carbon

Answer 7

Element

Question 8

subtances made from elements are called??

Answer 8

Compounds

Question 9

smallest unit of compound that still have the properties of tbat compound

Answer 9

Molecules

Question 10

made up of atoms

Answer 10

Matter

Question 11

make up elements

Answer 11

Atom

Question 12

substances that are made up of only one kind of atom
(Oxygen, Hydrogen, Carbon, Nitrogen)

Answer 12

Elements

Question 13

Subtances that are made up of two or more elements

Water(H2O), Carbon Dioxide (CO2)

Answer 13

Compound

Question 14

The smallest part of compound

Answer 14

Atom

Question 15

Regarded as the first atomic theorist, called the small pieces of matter “atomos” means “indivisible”

Answer 15

Leucippus and Democritus (460-371 BC)

Question 16

He affirmed they there are four fundamental permanent elements.
Earth, Fire, Water, Air

Answer 16

Aristotle

Question 17

British Chemist and Physicist.

Answer 17

John Dalton

Question 18

Made a break-through in his work, paving the way for the modern era of chemistry.

Answer 18

John Dalton

Question 19

Proposed the Modern Atomic Theory

Answer 19

John Dalton

Question 20

mass of the reactants is the same as the mass of the products 2H + 0 =H2O

Answer 20

Law of Conservation of Mass

Question 21

combinationnof elements should take place in fixed ratios by mass

Answer 21

Law of Definite Proportion

Question 22

two elements can combine to form two or more compounds

Answer 22

Law of Multiple Proportion

Question 23

English Physicist known for his work on the nature of electrons

Answer 23

J.J. Thomson

Question 24

Proposed the Plum Pudding Theory Model in the late 19th Century

Answer 24

J.J. Thomson

Question 25

According to this theory, atoms are like plum pudding, with tint positive charges scattered throughout a cloud of negative electrons.

Answer 25

Plum Pudding Model Atomic Theory

Question 26

Nuclear Model of an atom, He believed that electrons revolve around a positively charged center ot the atom like the rings of Saturn.

Answer 26

Ernest Rutherford

Question 27

In Ernest Rutherford Model Atomic Theory, the nucleus is?

Answer 27

The nucleus is small The nucleus is dense The nucleus is positively charged

Question 28

Danish physicist known for his pioneering work in atomic structure, proposed the Planetary Model in the early 20th Century

Answer 28

Niels Bohr

Question 29

According to this theory, electrons orbit the nucleus of an atom in specific energy levels or shells

Answer 29

Planetary Model Bohr's Atomic Theory

Question 30

often referred to as the building blocks of matter

Answer 30

Atoms

Question 31

composed of smaller subatomic particles such as protons, neutron, electrons

Answer 31

Atoms

Question 32

Small, dense, positivelt charged center of the atom which contains most of the atom's mass.

Answer 32

Nucleus

Question 33

what are the nucleus subatomic particles?

Answer 33

Protons Neutrons

Question 34

what are the nucleus subatomic particles?

Answer 34

Protons Neutrons

Question 35

positively (+) charged particles

Answer 35

Protons

Question 36

Particles that have no charge (neutral)

Answer 36

Neutrons

Question 37

What are its components of Inner Structure of an Atom

Answer 37

Neutron Atomic Nucleus Proton

Question 38

Neutral particle in the atomic nuclues alongside protons

Answer 38

Neutron

Question 39

Positivelt charged center of the atom containing protons and neutrons

Answer 39

Atomic Nucleus

Question 40

Positivelt charged particle in the atomic nucleus

Answer 40

Proton

Question 41

an area around the nucleus where electrons are likely to be found orbiting the nucleus in several energy levels

Answer 41

Electron Cloud

Question 42

The electron cloud contains several energy levels like??

Answer 42

Electrons

Question 43

Components of Outer Structure of an Atom

Answer 43

Electron Cloud Atomic Orbitals Electron

Question 44

Region around the nucleus where electrons orbit

Answer 44

Electron Cloud

Question 45

Three dimensional regions where electrons are most likely to be found in an atom

Answer 45

Atomic Orbitals

Question 46

Negatively charged subatomic particle orbiting the nucleus

Answer 46

Electron

Question 47

ATOMIC NUMBRR AND ATOMIC MASSES

Answer 47

Atomic Number - protons equals electrons Neutrons - atomic mass minus # of protons Atomic Mass- # of protons plus # of neutrons

Question 48

Atoms of the _______ that have the _________ but different atomic mass

Answer 48

Same element, same atomic number

Question 49

he grouped the elements into three

Answer 49

Johann Wolfgang Dobereiner's Law of Triads

Question 50

arranged the elements according to increasing atomic weight where the chemical properties repeat in an interval of eight

Answer 50

John A. Newland's Law of Octaves

Question 51

arranged the elements according to increasing atomic weight, first to tabulate the elements

Answer 51

Dmitri Mendeleev's Periodic Table

Question 52

arranged the elements according to increasing atomic number

Answer 52

Henry Moseley's Periodic Table

Question 53

Classification of Elements

Answer 53

Metals Alkali Metals Alkaline Earth Metals Transition Metals Metalloids Non-Metals Halogens Noble Gases Lanthanides Actinides