MODULE 1: FUNDAMENTALS OF INORG CHEM Flashcards
the SCIENCE THAT DESCRIBES MATTER
CHEMISTRY
THE CENTRAL SCIENCE
CHEMISTRY
hydrocarbons & its derivatives
ORGANIC CHEMISTRY
inorganic compounds, metals, minerals
INORGANIC CHEMISTRY
DETECTION AND IDENTIFICATION of substances present (qualitative analysis) o amount of each substance (quantitative analysis)
ANALYTICAL CHEMISTRY / MEASUREMENT SCIENCE
processes in living organisms
BIOCHEMISTRY
behavior of matter
PHYSICAL CHEMISTRY
anything that HAS MASS AND OCCUPIES SPACE
MATTER
measure of the QUANTITY OF MATTER
MASS
AMOUNT OF SPACE
VOLUME
the CAPACITY TO DO WORK or TO TRANSFER HEAT
ENERGY
not considered as matter but considered as energy
light, sound, electricity & heat
energy in MOTION
KINETIC ENERGY
energy AT REST
POTENTIAL ENERGY
release heat
EXOTHERMIC
absorbs heat
ENDOTHERMIC
- molecules PACKED CLOSE TOGETHER ORDERLY
- rigid
SOLID
- molecules are CLOSE BUT RANDOMLY ARRANGED
- FLOWS and assumes shape of container
LIQUID
- molecules are FAR APART
- fills any container completely
- highly compressible
- expands indefinitely
GAS
solid to gas
SUBLIMATION
gas to solid
DEPOSITION
gas to liquid
CONDENSATION
liquid to gas
BOILING
liquid to solid
FREEZING
solid to liquid
MELTING
- CAN BE OBSERVED OR MEASURED without changing the identity of the substance
PHYSICAL PROPERTIES
- exhibited by matter as it UNDERGOES CHANGES in composition
CHEMICAL PROPERTIES
dependent on the amount of substance
EXTENSIVE PROPERTIES
- INDEPENDENT on the amount of substance
INTENSIVE PROPERTIES
- ONE OR MORE SUBSTANCES are used up
- one or more new substances are formed,
- energy is absorbed or released
- IRREVERSIBLE
CHEMICAL CHANGE
- NO CHANGE in chemical composition
- REVERSIBLE
PHYSICAL CHANGE
- variable composition
- MAY BE SEPARATED into pure substances by physical methods
MIXTURE
- FIXED COMPOSITION
- CANNOT BE SEPARATED into simpler substances by physical methods
PURE SUBSTANCE
- COMPONENTS ARE NOT DISTINGUISHABLE
- have SAME COMPOSITION THROUGHOUT
HOMOGENEOUS MIXTURE
- COMPONENTS ARE DISTINGUISHABLE
- do NOT have same composition throughout
HETEROGENOUS MIXTURE
- CAN BE DECOMPOSED INTO SIMPLER SUBSTANCE by chemical changes
- consists of TWO OR MORE DIFFERENT elements bound together
COMPOUNDS
- CANNOT BE DECOMPOSED TO SIMPLER SUBSTANCE by chemical changes
- consists of ONLY ONE KIND OF ATOM
ELEMENTS
MOST ABUNDANT ELEMENT
OXYGEN
most abundant element in universe
HYDROGEN
most abundant element in atmosphere
NITROGEN
the SMALLEST UNIT that retains the properties of an element
ATOM
all matter is composed of atoms and these cannot be made or destroyed
THEORY
DALTON’S THEORY
the NUMBER OF PROTONS in the nucleus of an atom DETERMINES ITS IDENTITY; this number is known as _________
ATOMIC NUMBER
the _______ of an atom is the SUM of the number of PROTONS and the number of NEUTRONS in its nucleus.
MASS NUMBER
MASS NUMBER FORMULA
ATOMIC + NEUTRON
- atoms of the SAME ELEMENT with DIFFERENT MASSES
- SAME number of PROTONS but DIFFERENT numbers of NEUTRONS
ISOTOPES
represents the composition of the nucleus
NUCLIDE SYMBOL
HOW TO GET NEUTRONS
MASS - ATOMIC NO.
same mass, different atomic no.
ISOBARS
same neutrons, different atomic no.
ISOTONES
iso means
SAME
the WEIGHTED AVERAGE of the masses of its isotopes
ATOMIC WEIGHT
greek word ATOMUS
uncuttable
atom as SOLID INDIVISIBLE SPHERE
LEUCIPPUS AND DEMOCRITUS
matter is made up of FOUR ELEMENTS
ARISTOTLE AND OTHERS
- SOLID SPHERE (BILLIARD BALL) MODEL
- atom as solid sphere but NOT INDIVISIBLE
- he believed that there are components inside an atom, pero ndi niya alam kung ano yon
JOHN DALTON
elements of a chemical compound are HELD TOGETHER BY ELECTRICAL FORCES
HUMPHRY DAVY
relationship between the AMOUNT OF ELECTRICITY USED in electrolysis and the AMOUNT OF CHEMICAL REACTION that occurs
MICHAEL FARADAY
Electrons -> electric ions
GEORGE STONEY
- CATHODE-RAY TUBE EXPERIMENT
- MOST CONVINCING EVIDENCE of electrons
- PLUM PUDDING MODEL
- like raisins on the bread; nakakalat ang atom
JOSEPH JOHN THOMSON
- OIL DROP EXPERIMENT
- determine the charge of electrons
ROBERT MILLIKAN
- SATURN LIKE MODEL
HANTARO NAGAOKA
CANAL RAYS EXPERIMENT
- cathode-ray tube also generates a STREAM OF POSITIVELY CHARGED PARTICLES
- proves the existence of protons
EUGEN GOLDSTEIN
THE SCATTERING EXPERIMENT
- the particles PASSED THROUGH the foil with LITTLE TO NO deflection
- atoms consist of very small particles, very dense POSITIVELY CHARGED NUCLEI surrounded by clouds of electrons at relatively large distance from the nuclei
- HINDI NAKAKALAT ANG ATOMS
- protons sa center called nucleus
ERNEST RUTHERFORD
studies XRAYS given off by various elements
“the number of protons in the nucleus of an atom determines its identity; this number is known as the atomic number of that element”
H.G.J. MOSLEY
- bombardment of beryllium with high-energy alpha-particles produced NEUTRONS
J. CHADWICK
described the electron of a hydrogen atom as REVOLVING AROUND ITS NUCLEUS in one of a discrete set of circular orbits (energy levels/subshell)
NEILS BOHR
- each orbit corresponds to a DEFINITE ENERGY LEVEL for the electron
BOHR’S PLANETARY MODEL
proposed the idea of WAVE-LIKE NATURE of electrons
- UNPREDICTABEL ang location ng electrons
LOUIS DE BROGLI
- NOT POSSIBLE to determine exact momentum and the exact potion at the same moment in time
- dahil raw wave-like motion ay halos imposible na malocate ang electrons
WERNER HEISENBERG’S UNCERTAINTY PRINCIPLE
it ESTIMATES POSITION of electrons and quantifies energy levels
sa kaniya, possible malaman ang location because of the wave equation
ERWIN SCHRODINGER’S WAVE EQUATION
a REGION OF SPACE in which the probability of finding an electron is HIGH
ATOMIC ORBITALS
ELECTRON CLOUD MODEL
QUANTUM MECHANICAL MODEL
ERWIN SCHRODINGER
angular quantum number is also known as
AZIMUTHAL
specific orbital
orientation in space of the orbital
MAGNETIC QUANTUM NUMBER
direction of spin
SPIN QUANTUM NUMBER
- distribution of electrons
- describes the arrangement of electrons in orbitals, subshells, shells in an atom
ELECTRON CONFIGURATION
atom in ITS LOWEST ENERGY, OR UNEXCITED state
GROUND STATE
Orbitals fill in order of increasing energy, from lowest to highest
AUFBAU PRINCIPLE
NO MORE THAN TWO electrons can occupy each orbital, and if two electrons are present, they must have opposite spins.
PAULI EXCLUSION PRINCIPLE
electrons are placed singly into the boxes before filling them with both electrons
a single electron will occupy an empty orbital first before pairing
HUND’S RULE
an atom consists of the elemental symbol of the LAST NOBLE GAS prior to that atom, followed by the configuration of the remaining electrons.
NOBLE GAS CONFIGURATION