Bridging Course Flashcards
1
Q
Polyatomic ions give name and formula
A
2
Q
Atomic number definition
A
Number of protons in nucleus
3
Q
Mass number definition
A
Number of protons and neutrons in nucleus
4
Q
Isotope definition
A
Atoms of the Same number of protons but diff number of neutrons
5
Q
Relative isotopic mass definition
A
Mass of an isotope compared with 1/12th mass of an atom of c12
6
Q
Relative atomic mass definition
A
The mean mass of an atom compared with 1/12th mass of an atom of c12
7
Q
What is the molecular formula
A
The actual number of atoms of each element in a molecule
8
Q
Empirical formulae definition
A
Simplest whole number ratio of atoms of each element in a compound
9
Q
What does anhydrous salt mean
A
Without water so just the salt
10
Q
How do u calculate water of crystallisation
A
- Find mass of anyhdrous salt by doing mass of hydrous salt - mass of water
- Find mass of water lost by mass of hydrated salt- mass of residue after heating
- Do mass over mr to get ratio for anhydrous salt and water
- Divide by smallest find simplest whole number ratio
