Science Quiz / yr1 chemistry (episode I)

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HintAnswer
bonded electron pair is shared unequally between bonded atoms
during combustion you need a p______ supply of oxygen to yield co2 and water
name so4(2-)
shape of a carbonate ion
aliphatic alkene general formula
a bond bending causes a change in
water is a ____ molecule
why are c-h bonds non polar
most electronegative atoms are n___ _____
a not very electronegative atom p____
bond angle in a molecule with a tetrahedral shape
radiation from the sun is absorbed and re-emitted from earth's surface in l_____ w_____ form
number of orbitals in n3
number of mol of [O] for oxidation of one mole of primary alcohol to aldehyde
type of isomers with different arrangement of atoms in a space (with same structural formula)
what type of alcohol is 2-methylbutan-2-ol
E/Z isomerism can occur in a smaller range of compounds than _____ isomerism
m/z ratio of compound represented by m/z ratio of the
greenhouse gas (/3)
what type of alcohol is 2-methylpropan2-ol?
stereoisomers have the same s______ f_______
The ____ denotes the number of carbon atoms in the longest continuous chain in the molecule
oxidation of primary alcohol to an aldehyde yields one mole of which by-product
electronegativity difference in a covalent bond
shape of a nitrate ion
algebraic expression for no. of electrons in a shell
non metals gain electrons to form a___
no carbon atoms in chain= 10 (stem)
max number of electrons in n2
molecular ions fragment into molecular ions and ____
number of orbitals in n4
pi-electron density is concentrated a______ a____ b____ the line joining the nuclei of bonding atoms
type of radiation absorbed by most bonds
name co3(2-)
within a subshell, the orbitals have same _____
atoms in molecules are in constant m_____
first aliphatic alkene in homologous series
S_ (sulfur)
a metallic structure contains billions of atoms held together in a g________ m_______ l______
number of orbitals in n2
electronegativity difference in a polar covalent bond
as the hydrocarbon chain increases in length, alcohol solubility in water ____
name mno4-
sulfur found in molecules containing multiples of _ sulfur atoms
dipoles in carbon dioxide are equal and act in ______
number of lone pairs in a tetrahedral molecule
a region of space with high probability of finding an electron
bond angle in a molecule with a non linear shape
down a group, first ionisation energy _____
(h2)c=c(h)(c2h5) will not have stereoisomerism because of the position of which element
absorbing IR radiation causes bonds to b_____ more
in a solid metal structure, cations remain fixed contain the positive nuclei and i______ e______
electrons in same orbital have opposite spins to conteract the repulsion of the two ____ c_____
which chemical species are not detected by a mass spectrometer (as they are uncharged)
any particular bond can only absorb radiation that has the ____ _____ as the natural frequency of the bond
requirement for molecule to have E/Z isomerism (/2)
how many alkyl groups are bound to c-oh in a secondary alcohol?
units used specially for natural frequency of a bond (as opposed to frequency in general which is hertz)
is more or less energy required to break a C-I bond than C-Cl bond
no of carbon atoms in chain= 1 (stem)
mass spectra gives information about s_____ of the organic compound
c-h is a pure _____ bond
why does electronegativity increase across the periodic table (/2)
down a group, atomic radius _______
amount of a substance that contains 6.02 x10^23 particles
alkyl group suffix
dipoles in water act in ______ direction(s)
all electrons that share same orbital shape and same energy level are in the same
cr2o7 (2-) is reduced to cr _+
does 3d10 come before/after 4s2 in electron config.
why does nitrogen have a higher ionisation energy than oxygen?
shells are e___ ____
is rate of hydrolysis faster for fluoroalkanes or iodoalkanes
4s subshell empties ____ the 3d sub shell
vibrations of most bonds observed in range 200-_____cm^-1
stereoisomers have a ______ arrangement of atoms within a space
reaction of oxygen and alcohol called a c________ reaction
heavier atoms vibrate _____
a homologous series of aliphatic hydrocarbons (/3)
compares mass of molecule with mass of an atom of carbon12
for each carbon in a c=c bond in an alkene, how many electrons are used in a pi bond?
cause of different electron sharing between different covalently bonded chemical species (/3)
greater the shell number, ___ the p orbital from nucleus
no carbon atoms in chain= 9 (stem)
P_ (phosphorus)
in a ___ bond the electron bond is shared equally
cause of different electron sharing between different covalently bonded species (/3)
smaller peak next to the molecular ion peak is called the ______ peak
number of mol of [o] for oxidising a primary alcohol to a carboxylic acid
number of bonded pairs in a non linear molecule
the compound the chemist is trying to prepare via organic synthesis is called the _______ molecule
name a type of subshell (/4)
giant structures have ___ boiling points and melting points
name no2-
number of lone pairs in a pyramidal molecule
number of bonded pairs in a tetrahedral molecule
simple molecular structure of oxygen
3d subshell is a _____ energy level than 4s sub shell
process of molecular ions (in mass spec) breaking down is called
a _____ denotes side chains or functional groups
HintAnswer
in a c=c bond each carbon contributes an electron to the pi bond from which orbital?
bonds can absorb ______ radiation
ionic compounds are ____ in polar solvents
a negative charge cloud with shape of an orbital
three elements form a single compound with a suffix ___
the number of particles in each mole of carbon-12
name a type of subshell (/4)
a dipole in a polar covalent bond is _________
do you reflux or distil a primary alcohol with acidified potassium dichromate to obtain a carboxylic acid
dichromate (VI) ions are reduced to ___ 3+ ions
number of moles * molar mass =
greenhouse gas (/3)
two elements form a single compound with a suffix of ____
metals lose electrons to form c ___
6.02x10^23
polar solvents attract charged ions in an _____ l_____
alkanes are unreactive due to their bonds being ___ ____
molecular ion peak known as the:
number of lone pairs in an octahedral molecule
molecular ions formed in mass spectra by _____ an electron
down a group, nuclear attraction on outer electrons ______
no carbon atoms in chain= 4 (stem)
how many byproducts are formed by oxidation of aldehyde to carboxylic acid
no carbon atoms in chain= 5 (stem)
across a period there is ________ shielding
cis isomer relates to E or Z stereoisomer?
name po4(3-)
no carbon atoms in chain= 3 (stem)
a bond bending depends on... (/2)
compounds with a low volatility have a ___ boiling point
bonded atoms with similar electronegativities share a ___ ___ bond
to obtain an aldehyde, heat a ____ alcohol with acidified potassium dichromate
a homologous series of aliphatic hydrocarbons (/3)
giant covalent structures are held together by strong ______ bonds
greenhouse gases absorb the longer wavelength IR radiation because it is the same frequency as the _____ ______ of their bonds
rate of hydrolysis dependson the ____ of the carbon-halogen bond
ionisation energy ______ during electron pairing in p orbitals
bond angle in a molecule with a pyramidal shape
mass spectrometer detects which ratio? (hint: m/z)
colour of solution containing chromium(III) ions
electronegativity difference in an ionic bond (greater than _)
giant covalent structures (elements) (/3)
All electrons that have the same value for n
a region that can hold two electrons of opposing spin
a very electronegative atom f____
max electrons in an p orbital
number of bonded pairs in a pyramidal molecule
mass spectrometer detects the m/z ratio of the ______ ______
trans isomer relates to E or Z stereoisomer?
stronger bonds vibrate ____
if the molecular formula is n2o4, what is the empirical formula?
a double bond counts as how many bonded regions?
shape of a sulfate ion
C-F bond requires a______ amount of energy to break
how many chemical species does fragmentation produce?
a not very electronegative atom l___
classification of an alcohol depends on number of hydrogen atoms and _____ groups attached to the carbon bonded to the OH group
what type of alchol is pentan3ol
combustion is e_______
which type of stereoisomerism can occur in an alkane with no functional group?
which polar bond do alcohols contain? (x-y)
shape around a c=c bond
a very electronegative atom o__
melting point increases from group 1 to group _
falls in ionisation energy across periods exist when a new ________ starts getting filled
number of bonded pairs in an octahedral molecule
a homologous series of aliphatic hydrocarbons (/3)
amount a bond vibrates increases with ______
pi bond is formed by the sideways overalp of two ___ orbitals
a primary alcohol
greater shell number, greater ___ of spherical s orbitals
in a solid metal structure, electrons are pooled and are d______
simple molecular structures have ___ boiling points and melting points
in a solid metal structure, cations are f______ in position
max number of electrons in n3
an alcohol with the same number of carbon atoms as an alkane is ____ soluble in water
number moles = mass / ____
mass spectrum of each compound is u___
name cr2o7(2-)
in c=c bond in an alkene how many fo each carbon's electrons are used in sigma bonds
the attraction of a bonded atom to the pair of electrons in the covalent bond
a _____ denotes only functional group
Which has a higher energy level: Boron or Beryllium?
simple molecular structure of phosphorus
max electrons in an s orbital
how many hydrogens does the c-oh in a primary alcohol bind to
name oxidising agent used in aldehyde synthesis
each new shell gains a new type of _____
as a carbon chain increases, alchols and alkanes have more _____ properties
primary and secondary can be oxidised by an o________ a_______
type stereoisomerism (/2)
atoms are joined by covalent bonds that vibrate naturally around a c_______ p______
how many alkyl groups is the c-oh in a tertiary alcohol bound to
type of stereoisomerism (/2)
a double bond prevents r_____ of the carbons
avogadro constant
how many alkyl groups does a primary alcohol contain (not counting c(oh)h2)
the simplest whole number ratio of atoms of each element in a compound
why is methanol an exception to alcohol classification?
across a period the similar shielding due to same ____ being occupied
HintAnswer
mass spectra used to identify m______ m_____ of an organic compound
giant covalent structures (elements) (/3)
bond angle in a molecule with a linear shape
name no3-
Units for number of particles in a substance
radiation re-emitted from greenhouse gases causes g______ w______
across a period, nuclear charge ____
electrons in same orbital have opposite ___
requirement for molecule to have E/Z isomerism (/2)
oxidising agent for carboxylic acid synthesis is a solution of potassium dichromate in dilute ______ acid
is carbon dioxide is polar or non polar
alcohols experience which type of intermolecular bond (due to the presence of the hydroxyl func group)
a not very electronegative atom s____
no carbon atoms in chain=6 (stem)
max electrons in a d orbital
order of filling subshells 3p, 4s, ___
number of lone pairs in a linear shaped molecule
number of lone pairs in a non linear molecule
greenhouse gas (/3)
a bond stretching behaves like a simple harmonic of a s______
across a period, nuclear attraction ____
alkenes are are u_______ hydrocarbons
number of orbitals in n1
positive ions form in mass spectrometer are called
simple molecular structure of nitrogen
volatile compounds have a ___ boiling point
higher boiling point of alcohols compared to alkanes due to which intermolecular bonds having to be broken?
name nh4+
which mass spec peak is higher: M^+ or M+1 ?
down a group, there are more inner shells causing ______
in metals, the position of cations maintain shape and s_____
max number of electrons in n4
which type of alkenes do not obey the general formula?
number of bonded pairs in a linear molecule
what type of alcohol is propan-2-ol
max number of electrons in n1
in hydrolysis which bond in a haloalkane is replaced by a C-OH bond
carbon dioxide contains two ___ bonds
name a type of subshell (/4)
no carbon atoms in chain= 8 (stem)
in mass spec, each molecule fragments differently depending on their ________
an alcohol with the same number of carbon atoms as an alkane is _____ volatile
vibrating bonds of greenhouse gases eventually re-emit the radiation that increases ________ of atmosphere close to earths surface
vibrations of most bonds observed in the range ___-4000cm^-1
for oxidation of alcohols, you must use a e_____ of acidified potassium dischromate (VI)
a very electronegative atom n___
no carbon atoms in chain= 7 (stem)
simple molecular structures form from simple molecules bonding together via w____ l______ f_____
an alcohol with the same number of carbon atoms as an alkane has a _____ melting point
much of the sun's visible and IR radiation is _____ by atmospheric gases
name of a process to calculate molecular mass
natural frequency vales are very ______
name oh-
a rhythmic movement along line between atoms so distance between atomic centres increases and decreases (s____)
do you distil or reflux in production of aldehydes
across a period the first ionisation energy ______
transition metals can form several ions with different ____
absorbing IR radiation causes bonds to s______ more
name so3(2-)
during mass spec. some molecular ions break down into ____
what type of alcohol is methanol
name hco3-
number of bonded pairs in a trigonal planar molecule
E/Z Isomerism only occurs in compounds with a c _ c bond
which type of element is not present in pauling scale?
colour of solution containing dichromate(VI) ions
separation of opposite charges called a
shells contain atomic ____
which has a higher ionisation energy: oxygen or nitrogen?
4s subshell fills ____ the 3d sub shell
to find the empirical formula you must first calculate the number of ____
m+1 peak caused by _______ isotope
number of lone pairs in a trigonal planar molecule
giant covalent structures (elements) (/3)
number of atoms of each element in a molecule
as no carbon chain increases in an alcohol, _____ heat is released per mol combusted
bond angle in a molecule with an octahedral shape
name a type of subshell (/4)
molecular ion peak is the clear ____ at the highest m/z value
simple molecular structure of sulfur
which intermolecular forces do alkanes experience
the dipoles in water __ __ _ out
a bond bending depends on... (/2)
cause of different electron sharing between different covalently bonded species (/3)
what scale compares the electronegativity of different elements
rate of hydrolysis increases as the strength of a carbon-halogen bond _______
bond angle in a molecule with a trigonal planar shape
which haloalkane bond is the strongest carbon-halogen bond?(ie C-X)
iodoalkanes react faster than bromoalkanes or chloroalkanes or fluoroalkanes or all of them
orbitals have different ____
melting points are comparatively low in groups _ to _
stereoisomerism occurs around a double carbon bond because rotation around the bond is r______
sharp decrease in melting point between groups _
why does electronegativity increase across the periodic table (/2)
compares mass of formula unit with mass of an atom of carbon 12
dipoles in carbon dioxide c_____ o___
Which is the weakest carbon-halogen bond?(i.e C-X)
no of carbon atoms in chain=2 (stem)
bond angle around c=c
exception to alcohol classification

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