Periodic Table Flashcards
1
Q
Groups
A
Families of elements
Similar but not the same
2
Q
Period
A
Rows across periodic table
No of shells
3
Q
Alkali metals
A
Produce hydrogen and hydroxides React in oxygen and water Exothermic Density, some float More reactive down group
4
Q
Lithium and water
A
Fizzes steadily, gradually disappears
5
Q
Sodium and water
A
Fizzes rapidly, melts into a ball, disappears quickly
6
Q
Potassium and water
A
Ignites with purple flame, disappears quickly
7
Q
Uses of alkali metals
A
Lithium, batteries, kill germs in pools
Sodium, street lamps, nuclear reactors
8
Q
Alkali earth metals
A
Exothermic reactions Produce hydroxide and hydrogen React with water except Berylium Densities More reactive down group
9
Q
Uses of alkali earth metals
A
Calcium, teeth
Strontium, red fireworks
Radium, cancer treatment
10
Q
Halogens
A
Non metals Insulators Brittle Crumble Poisonous Darker down group Less reactive down group Melting point increase down group Increase in size down group
11
Q
Fluorine
A
Gas
Yellow
12
Q
Chlorine
A
Gas
Green
13
Q
Bromine
A
Liquid
Volatile
Orange
14
Q
Iodine
A
Solid
Brown
15
Q
Displacement reactions
A
More reactive bonds, less reactive on own
Colour=less reactive
