atomic structure Flashcards
(9 cards)
1
Q
relative atomic mass
A
weighted mean mass of an atom compared with 1/12th mass of carbon-12
2
Q
atomic number
A
no of protons
3
Q
mass number
A
no of protons and neutrons
4
Q
differences between isotopes
A
different number of neutrons
different mass numbers
different PHYSICAL properties
5
Q
why do different isotopes of an element have the same chemical properties
A
same electronic confirguration/ same number of electrons in outer shell
6
Q
relative isotopic mass
A
mass of an atom of an isotope compared with 1/12th mass of carbon-12
7
Q
When is relative molecular mass used
A
For simple molecules
8
Q
When is the term relative formula mass used
A
For compounds with giant structures
9
Q
Describe what would happen when carbonate reacts with excess dilute hydrochloric acid
A
Effervescence and solid would dissolve
