2.1 - Atoms & Reactions Flashcards
What can be found from a mass spectrometer
The percentage abundance of the isotopes in an element
What are the 4 steps in mass spectrometry
- The sample is vapourised
- The sample is ionised to form positive ions
- The ions are accelerated
-Heavy ions move slower / are less deflected
4.The ions are detected as a mass-to-charge ratio, written as bevelled m over z
-Each ion produces a signal, so the larger the signal, the greater the abundance
Define relative Molecular mass
is applied to chemicals that have a fixed formula in terms of the number of atoms involved
Define relative Formula mass
is applied to chemicals that use an empirical formula to represent them
What is a ionic compound
A metal and a Non metal bonded together
What charge do metals have
+
What charge do non metals have
- and some +
What charge do ions from group 1 have
+1
What charge do ions from group 2 have
+2
What charge do ions from group 3 have
+3
What suffix do non metal ions in groups 15-17 have (5-7)
-ide
What charge do ions from group 17 (7) have
1-
What charge do ions from group 16 (6) have
2-
What charge do ions from group 15 (5) have
3-
define Polyatomic
made up of more than one type of atom
