gcse chemistry revision

?
what does the top number represent in the periodic table?
it represents the mass number
1 of 9
what does the bottom number represent in the periodic table?
it represents the atomic number
2 of 9
what are uses of nano particles?
medicines,cosmetics,self cleaning windows(glass coated with titanium oxide)
3 of 9
properties of giant covalent structures
insoluble in water,allotropes of carbon,high melting/boiling points,lots of energy to overgome forces
4 of 9
properties of covalent bonding
sharing electrons,does not conduct, no overall charge,non-metals and strong bonds
5 of 9
properties of simple molecules
weak intermolecular forces,low melting/boiling points
6 of 9
properties of giant metallic structures->Alloys
Alloys->usually a mixture of metals,harder because of distorted layers,two or more elements(at least one of which is a metal)
7 of 9
properties of metallic bonding
high melting/boiling points, good conductors, regular layers, atoms closely packed, giant structure, lattice of positively charged ions, delocalised electrons, strong electrostatic charge
8 of 9
OILRIG
O=OXIDISING, I=IS, L=LOSS OF ELECTRONS.......R=REDUCTION, I=IS, G=GAIN OF ELECTRONS........................OILRIG!
9 of 9

Other cards in this set

Card 2

Front

what does the bottom number represent in the periodic table?

Back

it represents the atomic number

Card 3

Front

what are uses of nano particles?

Back

Preview of the front of card 3

Card 4

Front

properties of giant covalent structures

Back

Preview of the front of card 4

Card 5

Front

properties of covalent bonding

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all topic 1-5 resources »