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Kimia Fisika

Pendahuluan

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Prasyarat belajar Kimia Fisika

memahami konsep dasar kimiamemahami matematika dasar

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What is chemistry?

The sciencethat deals with

the composition

the structure

the properties

the reactions

of substances

=============================================

Chemistry is the study of

matter and energy and

the interactions between them

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Physical chemistry

the study of

macroscopic, atomic, subatomic, and

particulate phenomena

in chemical systems

in terms of laws and concepts of physics.

http://en.wikipedia.org/wiki/Physicshttp://en.wikipedia.org/wiki/Physics

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the principles, practices and concepts of physics

motion,

energy,

force, time,

thermodynamics,

quantum chemistry, equilibrium.

http://en.wikipedia.org/wiki/Motion_(physics)http://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Timehttp://en.wikipedia.org/wiki/Thermodynamicshttp://en.wikipedia.org/wiki/Quantum_chemistryhttp://en.wikipedia.org/wiki/Chemical_equilibriumhttp://en.wikipedia.org/wiki/Chemical_equilibriumhttp://en.wikipedia.org/wiki/Quantum_chemistryhttp://en.wikipedia.org/wiki/Thermodynamicshttp://en.wikipedia.org/wiki/Timehttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Motion_(physics)

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ZAT

ZAT MURNI

UNSUR

KIMIA

UNSUR

ATOMIK

UNSUR

MOLEKULAR

SENYAWA

SENYAWA

MOLEKULAR

SENYAWA

IONIK

CAMPURAN

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Zat murni & campuran

Pure substances have constant

properties and compositionsThey may be an elementor a compound.

Mixtures have different compositions fromsample to sample.

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Physical Properties

Wujud zat (padat, cair, gas)

Tampilan zat

The physical properties of a sample can usually

be determined

without changing its composition

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Some commonly known physical properties

Kerapatan (berat jenis)

Wujud zat

warna Titik leleh (titik beku)

Titik didih

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.

Characteristic of molecules

- The kinds of component atoms

- The arrangement of component atoms inspace

Graphite and diamond

all C atoms, completely different chemical and physical

properties

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Chemical Properties

The characteristic ways in which a substance undergoes chemical

reaction or fails to undergo chemical reaction are called its chemical

propert ies.

A chemical reactionis a change in which at least one substance

changes its composition and its set of properties.

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Examples of chemical properties

flammability,

rusting

reactivity, and

biodegradability.

Rusting involves a change in composition (from iron to an iron oxide). .

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Atomic particles

Particles Symbol Absolute mass

(g)

ElectronProton

Neutron

e-p+

n

9.11 x 10-28

1.673 x 10-24

1.675 x 10-24

-Protons and neutrons (colectively called nucleons) make up the central core

of the atom

-Electrons forming some sort of cloud around the nucleus

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Location of Atomic electrons

Electronic

shell

Number of

subshell

Name of subshell

KL

M

N

12

3

4

1s2s and 2p

3s, 3p, and 3d

4s, 4p, 4d, and 4f

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.

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3434

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The relative electronegativity of element

the more protons in the nucleus, the more tightly the

electron is held in the atoms of the same period

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