Periodic Table Flashcards
What is an element
An element is a substance made up on only 1 atom
What is a compound
A compound is made up of 2 elements chemically bonded together
What is group 1 on the periodic table called
Alkali metals
What is group 7 called
Halogens
What is group 8 called
Noble gases
What is the middle group of elements called
Transition metals
What elements are in group 1
Lithium, potassium, sodium, francium, rubidium and caesium
What are the physical properties of the alkali metals
- soft metals
- low boiling points
- easy to cut
- dull metal
How reactive are the alkali metals in water
They are the most reactive metals and the reactivity increases as you go down the group
How are the alkali metals stored and why are they stored like this
They are stored in oil as they react to both water and oxygen
Why are they called the ‘alkali metals’
All of the metals form metal hydroxide that turns the mineral indicator blue which is an alkali colour
What is the reactivity of the halogens
They are the most reactive non metals
The reactivity decreases as you go down the group
What is the reactivity of the noble gases
They are unreactive
Why are elements placed in the same groups
They have similar chemical properties