If the number of gas molecule is doubled in a certain volume of gas the pressure
Ais decreased to half
Bis doubled
Cis increased to four times
Dremains unchanged
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A symbolic representation to emphasize the valence shell of an atom is called
Aargand diagram
Bcanstellation diagram
Celectron dot diagram
Dstructural formula
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For which elements do the number of electrons in their outer or valence shell correspond to their group number?
Atransition group
Bnoble gas
Crepresentative or main group
Dmetals
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Atoms or ions which have the same electronic configuration
Aisoelectronic
Bisometric
Ciso-ionic
Disotope
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The elements, germanium, silicon, which are commonly used for semiconductors belongs to what group of elements?
ABoron group
BCarbon group
CNitrogen group
DHalogens
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The components resulting from the reactions are called
Aproducts
Breductants
Creactants
Doxidants
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Compounds which only contain carbon and hydrogen are called?
Apolymorphs
Bhydrocarbons
Cpolycarbon
Dplastics
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Which of the ff designation means that the amount of solute is expressed in physical mass units, i.e. grams, and the amount of solution (not solvent) is expressed in volume units, i.e. milliliters
Av/v
Bw/v
Cw/w
Dv/w
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The property of liquid which describes their resistance to flow is called
Aviscosity
Belasticity
Cglueyness
Dstickiness
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The anions and cations which are unaffected by the reaction in solution are called
Aneutral ions
Bspectator ions
Cnoble ions
Dobserver ions
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A covalent bond between atoms of identical electronegativity is called
Apolar
Bbipolar
Cnonpolar
Dmonopolar
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A formula which describes only the numbers of each element in the molecule is called
Astructural formula
Bmolecular formula
Cempirical formula
Dionic formula
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The pairs of electrons not shared in the covalent bond are called
Abonded electrons
Bfree electrons
Cvalence electrons
Dnonbonded electrons or lone pairs
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The particles in the nucleus, namely the neutrons and the protons, are collectively referred to as
Apositrons
Belectrods
Cnucleons
Disotope
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The word proton comes from the greek word "proteios" meaning
Aof first importance
Bwith positive charge
Cunique
Dcannot be cut
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A chemical substance which is readily evaporates and readily diffuses at ordinary room temperature and pressure conditions is called
AInflammable
BInert
CVolatile
DCorrosive
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The gases that rarely take part in a chemical reaction are called
AMiscible gases
BVolatile gases
CNoble gases
DPermanent gases
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Which type of ions, metals form when enter into chemical reaction?
ANegative ions
BPositive ions
CEither positive or negative ions
DThey do not from any ions
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The atoms having different atomic numbers but the same mass number are called
Aisotones
Bisotopes
Cisomer
Disobars
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The atoms which have the same number of neutrons but different mass numbers are called