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SAS 02- CHEMISTRY > SAS 02 > Flashcards

SAS 02 Flashcards

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1
Q

Basic unit of matter and defining structure of an element

A

Atom

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2
Q

ATOM comes from the Greek word meaning

A

indivisible

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3
Q

very small particle that is the building block of for an atom

A

Subatomic particle

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4
Q

THREE TYPES OF SUBATOMIC PARTICLES

A

-electrons
-protons
-neutron

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5
Q

Subatomic particle that possesses a negative electrical charge

A

Electron

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6
Q

Subatomic particle that possesses a positive electrical charge

A

Proton

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7
Q

Subatomic particle that has nno charge associated with it and it is Neutral

A

Neutron

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8
Q

small, dense, positively charged center of an atom

A

Nucleus

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9
Q

any subatomic particle found in the nucleus of an atom

A

Nucleon

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10
Q

an atom that contains all the Electron

A

Outer (Extranuclear) region

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11
Q

number of protons in the nucleus of an atom

A

atomic number

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12
Q

sum of the number of protons and the number of neutron in the nucleus of an atom

A

Mass number

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13
Q

atoms of an element that have the same number of Proton and the same number of electrons but different numbers of neutron

A

Isotopes

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14
Q

two different element have the same atomic weight or mass number but different atomic number

A

Isobars

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15
Q

different elements having the same number of neutron

A

Isotones

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16
Q

earliest known proponent of anything resembling modern atomic theory

A

Demotricus

17
Q

he published his modern atomic theory in 1803 and consists of five important points

A

John Dalton

18
Q

proposed the existence of indivisible atom as a response to the arguments of parmenides and paradox of Zeno

A

demotricus

19
Q

proposed that atom is a sphere of particles to which are embedded particles

A

Joseph Johnthompson

20
Q

Disapproved Thompsons theory by the “GOLD FOIL/ FILM EXPERIMENTS”

A

Ernest Rutherford

21
Q

Raisin- Bread Model & Plum Pudding Model

A

Joseph Jon Thompson

22
Q

Planetary Model

A

Neils bohr

23
Q

quantum mechanical model

A

erwin schrodinger

SAS 02- CHEMISTRY (1 decks)

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