1. C4 Revision Define: mass number:…………………………………… ………………………………………………………….
Subatomic particle
Relative charge
Relative mass
Proton
Neutron
Electron
Which element is this:
14 protons ………………………………..……
Mass number of 19 ……………..………..
Group 2, period 4 …………… ………
6 neutrons ……………………………………..
14 neutrons …………………………………...
Define:
mass number:…………………………………… ………………………………………………………….
……………………………………………………………………………………………. :
Proton number…………………………………………. ………………………………………………………….………………………………………………………....
What is a covalent bond? ………………………………….. …………………………………………………………………………… ……………………………………………………………………………
Draw a dot-and-cross diagram to show the bonding in chlorine, Cl2
Write a word equation for the reaction of sodium in water:
Write a balanced symbol equation for the reaction of potassium in water:
What is oxidation? …………………………… ………………………………………………………....
Write an ionic equation for the oxidation of Na to Na+
C4 Revision
Write a balanced symbol equation for the reaction of lithium and chlorine
Name a use for transition metals
An unknown compound makes a blue hydroxide precipitate, what metal is this?
Why would copper be used for electrical wires?
Name one benefit and one drawback of superconductors
Why is water chlorinated?
Name two ions you test for in water and what solutions you use
What is a displacement reaction? …………….………………… …………………………………………………………………………………………………………..……………………………………………………
Why is fluorine more reactive than bromine? ……………………………………………………………………………….. ……………………………………………………………………………..…
Write a balanced symbol equation for the reaction of chlorine and potassium bromide
Halogen
State
Colour
Chlorine
Bromine
Iodine
Describe how to carry out a flame test: ..………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Why do ionic compounds have high melting points?
…………………………………………………………………………..………………………………………………………………………………………....
When will an ionic compound conduct electricity? …………………………………………………………………………………..…………………………………………………………………………………..
Magnesium chloride contains Mg2+ and Cl- ions: what is the formula for magnesium chloride? ……………
Metal ion
Colour of flame
Li+
Na+ K+