C4 Year11 Revision Flashcards
1
Q
Chemical reaction
A
Rearranging atoms to make new chemicals
2
Q
Conservation of mass
A
Matter is not created or destroyed during a chemical reaction
3
Q
Mass of products =
A
The mass of the reactants
4
Q
Balanced symbol equation
A
A symbol equation in which there are equal numbers of each type of atom on either side of the equation
5
Q
Relative formula mass (Mr)
A
The relative atomic masses of the elements in a compound added together
6
Q
Mr in a balanced equation
A
Mr of reactants = Mr of products
7
Q
Mole
A
Avogadro’s number of an atom, ion or compound
8
Q
Formula for moles
A
Mass/relative formula mass (Mr)
9
Q
The mass of 1 mole of any substance=
A
formula mass in grams
10
Q
Value of Avogadro constant
A
6.02 x 10^23
11
Q
Avogadro’s constant
A
The number of atoms, molecules or ions in a mole of a given substance
