Chemistry C2 - The Periodic Table Flashcards
chemistry for GCSE about the periodic table
Columns are called?
Groups
Rows are called?
Periods
Metals are found towards the….
Left and bottom
Non-metals are found towards the…
Right and top
Metals react by…
Losing electrons
Non-metals react by…
Gaining electrons
Group 0 is found at the…
Right hand side of the periodic table.
What state are group 0 at room temperature?
Gases
How many electrons do group 0 elements have in their outer shell?
All have 8 except for helium which has 2.
Describe the reactivity of group 0?
Unreactive
What are the products when a group 1 metal reacts with water?
A metal hydroxide (alkali) and hydrogen.
What are the products when a group 1 metal reacts with chlorine?
A metal chloride salt
What are the products when a group 1 metal reacts with oxygen?
A metal oxide.
What is the trend in reactivity in group 1?
Reactivity increases down the group.
Explain the trend in reactivity in group 1?
Nuclear attraction decreases down the group so it becomes easier to lose the outer shell electron.
Describe the structures formed by group 7 elements?
They exist as diatomic molecules, they are simple molecular substances.
Describe the trend in reactivity in group 7?
Reactivity decreases down the group.
Explain the trend in reactivity for group 7?
Group 7 elements want to gain electrons, this becomes harder as the atoms get larger.
What is a displacement reaction?
A reaction where a more reactive halogen takes the place of a less reactive halogen in a compound or solution.
Where are transition metals on the periodic table?
The central block of the periodic table.
How are their compounds different to group 1 metals?
They can form coloured compounds.
What are the charges on their ions?
Transition metals can form ions with different charges e.g. Fe2+ & Fe3+.
How do their properties compare to group 1 metals?
They are less reactive, harder and denser than group 1 metals.
