chemistry- Aqa - GCSE - chapter 3 quantitative chemistry

Thermal decomposition

a chemical reaction that happens when a compound breaks down when heated.

Define relative atomic mass

the average mass of an element taking into account the masses and abundance of its isotopes.

define relative formula mass

sum of relative atomic masses of all atoms in a formula

what is avogardos constant

the number of atoms, molecules, or ions in a mole of a given substance. 6.02 x 10^23

what is the molar volume of a gas at room temperature and pressure?

1 mole of gas at room temperature and pressure has a volume of 24 dm3

what is a titration?

a technique where a solution of known concentration is used to determine the concentration of an unknown solution

Why is it not always possible to obtain the calculated amount of a product?

reaction may be reversible, some product may be lost, side reactions may occur.

what is the equation for moles (using mass and Mr)

moles= mass/mr

what are the two equations for concentration

c=m/v c=mol/v