Chapter 2 - Atoms, ions, compounds Flashcards Preview

OCR A-level Chemistry Year 1 > Chapter 2 - Atoms, ions, compounds > Flashcards

Flashcards in Chapter 2 - Atoms, ions, compounds Deck (16)
Loading flashcards...
1

Relative isotopic mass

the mass of an atom of an isotope compared to 1/12th the mass of an atom of carbon-12

2

Relative atomic mass

the weighted mean mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12

3

Moles

the amount of any substance that contains as many particles as there are carbon atoms in 12g of carbon-12 isotope

4

Avagadros constant

6.02 x 10^23

5

Molar mass

the mass per mole of a substance

6

Empirical formula

the simplest whole number ratio of atoms of each element present in a compound

7

Molecular formula

the actual atoms of each element present in a compound

8

Nitrate ion formula

NO3-

9

Carbonate ion formula

CO3 2-

10

Sulfate ion formula

SO4 2-

11

Hydroxide ion formula

OH-

12

Ammonium ion formula

NH4+

13

Zinc ion formula

Zn2+

14

Silver ion formula

Ag+

15

e.g
Mg is dissolved in HCl describe what you would see

Gas would be released
Fizzes
Mg dissolves

16

What are binary compounds?

Contains two elements only

How to name?
1st element + 2nd element -ide
Ionic compounds, metal ion comes first

e.g Sodium Oxide