Production and uses of products

Created by

poppy skeats

Cards (17)

How does moving down a group affect the attraction of outer shell electrons to the nucleus?
The attraction to the nucleus weakens
What is first ionisation energy?
The energy required for 1 mole of electrons to be removed from one 1 mole of gaseous atom
What happens to the first ionisation energy as the atomic radius increases?
The first ionisation energy decreases
What is electronegativity?
A measure of the tendency of an atom to attract a bonding pair of electrons
What happens to electronegativity as you move across a period?
It increases as you move across a period
What happens to electronegativity as you move down a group?
It decreases as you move down a group
What is electron affinity?
The change in energy when 1 mole of gaseous atom gains 1 mole of gaseous electrons to form a mole of negative ion
How does increasing the attraction from the nucleus affect the energy released when an ion is formed?
It increases
How does decreasing the attraction from the nucleus affect the energy released when an ion is formed?
It decreases
How does increasing the strength of attraction between atoms affect melting and boiling points?
It increases the melting and boiling points
What happens during oxidation?
Where an atom or ion loses electrons
What happens during reduction? 
Where an atom or ion gains electrons
What are oxidation states?
The number assigned to an element or compound that reflects how many electrons it has lost (positive number) or gained (negative number)
What are redox reactions?
Reactions where atoms have their oxidation state changed
Why are transition metals used as a catalysts?
Because they have variable oxidation states
Why are gold and silver often used in jewellery?
Because they are low on the reactivity series
What is the correct definition for amphoteric?
A substance that can act as both an acid and a base