Ionic And Covalent Compounds / Flashcards
1
Q
Ionic compound
A
- When a metal reacts with a non-metal we form an ionic compound
- The metal gives electrons to the non-metal
2
Q
Cation
A
When atoms lose electrons they form a positive ion
3
Q
Anion
A
When atoms gain electrons they form a negative ion
4
Q
Ions
A
Group 1 form 1+ ions
Group 2 form 2+ ions
Group 6 form 2- ions
Group 7 form 1- ions
5
Q
Ionic bonding
A
Ionic bonding is the ‘electrostatic attraction between ions’
6
Q
Compounds with 2 elements
A
Compounds with 2 elements joined end ‘ide’ e.g. copper sulphide
7
Q
Compounds with more than 2 elements
A
Compounds with more than 2 elements joined end ‘ate’ e.g. copper sulphate
8
Q
Covalent bond
A
- A covalent bond is a ‘shared pair of electrons between atoms’
- Covalent bonds form between non-metals
- Covalent bonds can form molecules or lattice
9
Q
Types of substance - ionic compound
A
- Ionic compounds form a lattice of ions
- Ionic compounds have high boiling points - strong electrostatic bonds between ions
- Ionic compounds conduct as liquids because ‘the ions can move’
- Solid ionic compounds are insulators as ‘the ions can’t move’
