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PHYSICAL SCIENCE, QUIZ 1 > QUIZ 1 > Flashcards

QUIZ 1 Flashcards

1
Q

deals with the study of MATTER

A

Chemistry

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2
Q

anything that has a mass and takes up a space

A

Matter

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3
Q

all matter is composed of ??

A

elements

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4
Q

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

A

Atom

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5
Q

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

A

protons and electrons, and is electrically balanced or neutral

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6
Q

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

A

electrons in the atom

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7
Q

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

A

Element

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8
Q

subtances made from elements are called??

A

Compounds

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9
Q

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

A

Molecules

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10
Q

made up of atoms

A

Matter

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11
Q

make up elements

A

Atom

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12
Q

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

A

Elements

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13
Q

Subtances that are made up of two or more elements

Water(H2O), Carbon Dioxide (CO2)

A

Compound

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14
Q

The smallest part of compound

A

Atom

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15
Q

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

A

Leucippus and Democritus (460-371 BC)

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16
Q

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

A

Aristotle

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17
Q

British Chemist and Physicist.

A

John Dalton

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18
Q

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

A

John Dalton

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19
Q

Proposed the Modern Atomic Theory

A

John Dalton

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20
Q

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

A

Law of Conservation of Mass

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21
Q

combinationnof elements should take place in fixed ratios by mass

A

Law of Definite Proportion

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22
Q

two elements can combine to form two or more compounds

A

Law of Multiple Proportion

23
Q

English Physicist known for his work on the nature of electrons

A

J.J. Thomson

24
Q

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

A

J.J. Thomson

25
Q

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

A

Plum Pudding Model Atomic Theory

26
Q

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

A

Ernest Rutherford

27
Q

In Ernest Rutherford Model Atomic Theory, the nucleus is?

A

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

28
Q

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

A

Niels Bohr

29
Q

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

A

Planetary Model Bohr’s Atomic Theory

30
Q

often referred to as the building blocks of matter

A

Atoms

31
Q

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

A

Atoms

32
Q

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

A

Nucleus

33
Q

what are the nucleus subatomic particles?

A

Protons
Neutrons

34
Q

what are the nucleus subatomic particles?

A

Protons
Neutrons

35
Q

positively (+) charged particles

A

Protons

36
Q

Particles that have no charge (neutral)

A

Neutrons

37
Q

What are its components of Inner Structure of an Atom

A

Neutron
Atomic Nucleus
Proton

38
Q

Neutral particle in the atomic nuclues alongside protons

A

Neutron

39
Q

Positivelt charged center of the atom containing protons and neutrons

A

Atomic Nucleus

40
Q

Positivelt charged particle in the atomic nucleus

A

Proton

41
Q

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

A

Electron Cloud

42
Q

The electron cloud contains several energy levels like??

A

Electrons

43
Q

Components of Outer Structure of an Atom

A

Electron Cloud
Atomic Orbitals
Electron

44
Q

Region around the nucleus where electrons orbit

A

Electron Cloud

45
Q

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

A

Atomic Orbitals

46
Q

Negatively charged subatomic particle orbiting the nucleus

A

Electron

47
Q

ATOMIC NUMBRR AND ATOMIC MASSES

A

Atomic Number - protons equals electrons

Neutrons - atomic mass minus # of protons

Atomic Mass- # of protons plus # of neutrons

48
Q

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

A

Same element, same atomic number

49
Q

he grouped the elements into three

A

Johann Wolfgang Dobereiner’s Law of Triads

50
Q

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

A

John A. Newland’s Law of Octaves

51
Q

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

A

Dmitri Mendeleev’s Periodic Table

52
Q

arranged the elements according to increasing atomic number

A

Henry Moseley’s Periodic Table

53
Q

Classification of Elements

A

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

PHYSICAL SCIENCE, QUIZ 1 (1 decks)

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