Stats: Elements of Life OCR B Chemistry

General Stats

This quiz has been taken 8 times
6 since last reset
The average score is 36 of 114

Answer Stats

Hint	Answer	% Correct
Maximum number of electrons shell 1 can hold	2	80%
Transition metals: ____ block	d	80%
Lanthanides and actinides: ____ block	f	80%
Groups 3-8: ____ block	p	80%
Group 1 and 2: ____ block	s	80%
What varies the colour of visible light	Wavelength	80%
Number of orbitals in the sub-shell = maximum number of electrons divided by ____	2	60%
Maximum number of electrons shell 2 can hold	8	60%
Form when atoms gain electrons to form negatively charged ions	Anion	60%
Form when atoms lose electrons to form positively charged ions	Cation	60%
HCl	Hydrochloric acid	60%
Metal + non metal forms an ____ bond	Ionic	60%
Speed of light = wavelength ____ by frequency	Multiplied	60%
Reaction where two light atomic nuclei fuse to form a heavier one	Nuclear fusion	60%
Acid + metal -> ____ + ____	Salt + hydrogen	60%
Acid + alkali -> ____ + ____	Salt + water	60%
Acid + base -> ____ + ____	Salt + water	60%
3.0x10^8	Speed of light/c	60%
Maximum number of electrons sub-shell d can hold	10	40%
Maximum number of electrons sub-shell f can hold	14	40%
Maximum number of electrons shell 3 can hold	18	40%
Bond angle of linear molecules	180	40%
Maximum number of electrons sub-shell s can hold	2	40%
Maximum number of electrons shell 4 can hold	32	40%
How many bonded pairs	4	40%
Maximum number of electrons sub-shell p can hold	6	40%
How many groups of electrons around central atom	6	40%
Bond angle of octahedral molecules	90	40%
Testing for ions - precipitate colour: copper + sodium hydroxide	Blue	40%
Shared pair of electrons	Covalent bond	40%
CH3COOH	Ethanoic acid	40%
When the particles absorb energy, raised from ___ ___ to an excited state	Ground state	40%
Atoms of same element with different mass numbers	Isotopes	40%
One ____ of substance contains as many particles are there are atoms in 12g of carbon-12	Mole/mol	40%
Energy of photon (J) = Plank constant (Js^-1) ____ by frequency (s^-1)	Multiplied	40%
HNO3	Nitric acid	40%
Particle theory: light regarded as stream of energy packets called ____	Photons	40%
Suspension of solid particles produced by a chemical reaction in solution	Precipitate	40%
What are the sub-shells labelled (in order)?	spdf	40%
Ions not involved in reaction	Spectator	40%
Electrons have a ___ and two can only occupy the same orbital if they have paired ones	Spin	40%
H2SO4	Sulfuric acid	40%
Chloride + silver nitrate	White	40%
Sulfate + barium chloride	White	40%
How many lone pairs in tetrahedral molecules	0	20%
How many lone pairs	1	20%
Bond angle of bent molecules	104.5	20%
Bond angle of trigonal pyramidal molecules	107	20%
Bond angle of tetrahedral molecules	109.5	20%
Bond angle of planar triangular molecules	120	20%
Bond angles of trigonal bipyramidal molecules	120 90/90 120	20%
How many lone pairs	2	20%
How many bonded pairs	2	20%
How many groups of electrons around central atom	2	20%
How many bonded pairs	3	20%
How many groups of electrons around central atom	3	20%
How many groups of electrons around central atom	5	20%
These absorb some of radiation emitted, so light analysed from stars is missing some frequencies, creating an ____ ____	Absorption spectrum	20%
Metal hydroxides (except group 1 hydroxides and ____ ____)	Ammonium hydroxide	20%
When heated, water removed as steam, leaving ____ solid	Anhydrous	20%
Man who came up with theory to explain why hydrogen atom only emits specific frequencies	Bohr/Niels Bohr	20%
Lead + potassium iodide	Bright yellow	20%
Layer outside star’s surface that contains ions, atoms and small molecules	Chromosphere	20%
Electronic configuration where sub-shells are fully occupied by electrons: ____-____ arrangement	Closed shell	20%
Arrangement of electrons in shells	Configuration	20%
These disrupt a spectrum that is ordinarily ____	Continuous	20%
Bromide + silver nitrate	Cream	20%
Covalent bond where both electrons in a pair come from the same atom	Dative	20%
3: Energy of photon equal to ____ between energy levels	Difference	20%
Iron (II) + sodium hydroxide	Dirty green	20%
Shown by an arrow pointing away from the atom that ____ the pair	Donates	20%
Shape of p orbital	Dumbbell/peanut	20%
Kind of radiation that a substance can emit or absorb	Electromagnetic	20%
Main point 1: ____ in hydrogen atom only exists in certain definite electron shells	Electron	20%
Ions held together by opposite charges in ____ bond	Electrostatic	20%
Can lose energy by emitting EM radiation, creating an ____ ____	Emission spectrum	20%
Simplest ratio for moles of atoms in the formula	Empirical formula	20%
Actual amount of product produced	Experimental yield	20%
Substances are made up of ____ ____. Basic building blocks. Match formula of substance.	Formula units	20%
The larger the energy gap between the two levels, the ____ the frequency of EM radiation emitted	Higher	20%
4: Frequency of emitted/absorbed light: energy change = __ x __.	hv	20%
Crystals said to be ____	Hydrated	20%
Orbitals filled in order of ____ energy	Increasing	20%
In an ____ atom, orbitals in same sub shell have same energy	Isolated	20%
Pairs of electrons not involved in bonding	Lone pairs	20%
Hydrogen emission spectrum in UV light	Lyman series	20%
What is the mass to charge (m/z) ratio equal to? (____ of detected ion)	Mass	20%
To calculate formula: heat until ____ stops decreasing (all water evaporated)	Mass	20%
Technique used to find molecular mass of elements and compounds	Mass spectrometry	20%
Pattern in ____ and ____ points across a period: initially increase, then fall dramatically, then decrease slowly	Melting boiling/boiling melting	20%
All ____ ____ (except group 1 carbonates excluding lithium)	Metal carbonates	20%
____ ____ is equal to Ar of substance in grams	Molar mass	20%
Tells you the actual numbers of different types of atom	Molecular formula	20%
Iodide + silver nitrate	Pale yellow	20%
On a mass spectra, from what you can calculate the relative abundance of each ion in a sample? (Height of each ____)	Peak	20%
The occurrence of periodic patterns (properties vary in a fairly regular way as you go left to right)	Periodicity	20%
2: A ____ is emitted or absorbed when the electron changes from one level to another	Photon	20%
Star’s surface	Photosphere	20%
6.63x10^-34	Planck constant/h	20%
Position of electron can’t be mapped exactly – we can only know the ____ of finding the electron in a given atomic orbital	Probability	20%
Electron can only possess definite quantities of energy: ____	Quanta	20%
Theory relied on theory of ____ of energy	Quantisation	20%
Mass of an atom of an element relative to carbon-12 (assigned mass of exactly 12)	Relative atomic mass/Ar	20%
Acid + metal oxide -> ____ + ____	Salt + water	20%
Acid + carbonate -> ____ + ____ + ____	Salt + water + carbon dioxide	20%
Shape of s orbital	Sphere/spherical	20%
Compounds insoluble in water: barium, calcium, lead and silver ____	Sulfates	20%
Expected amount of product in a reaction under ideal conditions	Theoretical yield	20%
Crystals of some ionic lattices include molecules of ____	Water	20%
Fitted within lattice in regular manner. Called ____ ____ ____	Water of crystallisation	20%
Theory that describes behaviour of light	Wave-particle duality	20%
When water added to anhydrous copper sulfate (____ colour) hydrated copper sulfate is formed (____colour)	White blue	20%
Silver and lead ____	Halides	0%
Iron (III) + sodium hydroxide	Orange brown	0%

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Elements of Life OCR B Chemistry - Statistics