A group of two or more atoms covalently bonded together with an overall positive or negative charge
What is polyatomic ions?
100
The amount of thermal energy emitted or absorbed by a chemical reaction, under conditions of constant pressure
What is enthalpy?
100
This kind of object undergoes electrolysis
What is an electrolytic cell?
100
Sum of protons and neutrons in an atom's nucleus.
What is an element's mass number
100
Change in concentration of either the reactants or products per unit of time
What is rate of reaction
200
This type of molecular force occurs in all 2+ molecule bonds
What is van der Waal' interaction?
200
The amount of energy needed to raise the temperature of 1 gram of water by 1 degree Celsius
What is a calorie?
200
Something containing an Aqueous solution of ions (often NaNO₃ or KNO₃) that enables the negative charge to be carried through a cell in the opposite direction to the electrons.
What is a salt bridge
200
Cobalt-60 is used in this medical procedure
What is radiotherapy
200
The collision theory's basic principles are these
What is a collision between the particles, they must be orientated properly and they must contain sufficient energy to bring about the reaction
300
The unit used in enthalpy changes/rates calculations
What is Kelvin (K)
300
Charge (Coulombs) is this forumula
What is = Current (amps) x time (seconds)
300
An apparatus that can give information about isotopic composition of different elements and the structure of molecules.
What is a mass spectrometer
300
A process in which one of the products of a reaction acts as a catalyst for the reaction
What is autocatalysis
400
This type of bonding occurs in only the strongest of materials
What is covalent network lattice/bonding?
400
The enthalpy change for the overall equation equals the sum of the enthalpy changes for the individual steps
What is Hess' law?
400
The effect of the electrolysis of water at the cathode.
What is the discharge of H+ and decrease of pH
400
The minimum energy required to remove one mole of electrons from one mole of gaseous atoms in their ground state.
What is first ionization energy
400
A curve that shows the kinetic energy of particles, the area past the activation energy line shows the number of particles with the energy to meet that border
What is the Maxwell-Boltzmann curve
500
NH3 is an example of this type of VSEPR shape
What is tetrahedral
500
A system's randomness is represented by this term
What is entropy?
500
Galvanised Iron
What is iron with a layer of Zinc deposited on it's surface via electroplating.
500
The position of an electron can never be known, however the probability of position of the electron can be evaluated.
hint: i am the one who knocks
What is the uncertainty principle
500
A catalyst that specifically targets the reaction of biological organisms