periodic table
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What are the vertical coloumns in periodic tables called
Groups
What are horizontal row called in periodic table
Periods
What happens in a chemical reaction
Elements combine to form new substances
How do you know is very reactive
If an element is keen to combine with other elements it’s said to be very reactive Group 1, 2 and 7 elements are all pretty reactive
How do you know what metals in Group 1 are reactive
Group 1 metals get more reactive as you go down the group This can be seen by how they react with water Lithium fizzes when it reacts with water (Li) Rubidium explodes when it reacts with water (Rb)
How do you know what non-metals in Group 7 are reactive
Group 7 non-metals get less reactive as you go down