Stoichiometry
This number multiplies everything in a chemical's formula in an equation
What is :coefficient
Type of chemical bonding found when non-metals and non-metals combine.
Covalent bonding
A process of coating metal with a different metal
What is electroplating
Atoms of the same element with different mass numbers
What is: isotope
What is a mole?
Is the SI base unit used to measure the amount of a substance.
What is stoichiometry about?
Stoichiometry is about measuring the amounts of elements and compounds involved in a reaction.
What are the two exceptions to the Octet Rules?
Hydrogen and Helium
The waste product of this electricity-generating device is water
What is: a fuel cell
What does this (s) mean?
Identifies a solid state
What is this number ‘ 6.022 x 1023’ called?
Avogadro’s number
Ions that remain the same in their original states before and after a chemical reaction.
What are: Spectator ions
A type of bonding involving the sharing of a pair of electrons
What is: Covalent bonding
The products of the electrolysis of brine
What are: Hydrogen, chlorine, sodium hydroxide
Gain of electrons
What is REDUCTION
What is molar mass ?
The mass in grams of one mole of any pure substance.
1 mole of a substance is dissolved in water and the solution is made up to 1dm3
What is: molar solution.
What type of chemical bonding is found in sodium chloride?
Ionic bonding
ionic aqueous solution or molten substance
Electrolyte
Name 2 properties of metals
ductile, malleable, electrical conductor, heat conductor, sonorous, high melting point, high boiling point
What is the equation for percentage yield?
(Actual yield/theoretical yield) x 100
What does the term “stochio“ mean?
Greek for element
Describe metallic bonding
Positively charged ions surrounded by a sea of (delocalised) electrons
At which electrode is hydrogen discharged? (seen as bubbles of gas)
What is :Cathode
What is Grahams law of diffusion?
The heavier the molecule, the slower the rate of diffusion
A formula that shows the smallest whole-number mole ratio of the elements of a compound, and might or might not be the same as the actual molecular formula.
What is an Empirical Formula