Module 3: Section 1 The periodic table Flashcards
In what order are the elements set out in the modern periodic table?
Atomic number
Whats is the name given to the rows in the periodic table?
Periods
What is the name given to the columns in the periodic table?
Groups
Write the definition of the first ionisation energy
Energy needed to remove 1 mole of electrons from one mole of gasous atoms
Name the three factors affecting ionisation energy
Nuclear charge
Atomic radius
Shielding
How does the first ionisation energy change as you go down the group?
As you go down a group ionisation energies decrease
Give a use of Magnesium hydroxide
Indigestion tablets as antacids
Describe the trends in boiling points as you go down group 7
Boiling points increase
Why do the halogens become less reactive going down the group?
They become less oxidising
What do you see when potassium iodide is added to bromine water?
Turn orange/brown
How is common household bleach formed?
Mix chlorine gas with dilute sodium hydroxide
What are the benefits of adding chlorine to drinking water?
Kills disease causing microorganisms
Which halide ion will form a white precipitate when mixed with silver nitrate solution?
Chloride
What colour will ammonia gas turn damp litmus paper?
Blue
