Everything Science Grade 10

CHAPTER 6. CHEMICAL BONDING 6.6

Na+ Mg2+ Al3+ NH+ 4 H+

Br−

name:

NaBr MgBr 2 AlBr 3 (NH 4 )Br HBr

sodium

bromide

magnesium

bromide

aluminium

bromide

ammonium

bromide

hydrogen

bromide

S^2 −

name:

P^3 −

name:

MnO− 4

name:

Cr 2 O^27 −

name:

HPO^24 −

name:

More practice video solutions or help at http://www.everythingscience.co.za

(1.) 002f (2.) 002g

Chapter 6 | Summary

See the summary presentation ( Presentation: VPduz at http://www.everythingscience.co.za)

• Achemical bondis the physical process that causes atoms and molecules to be
  attracted to each other and held together in more stable chemical compounds.


• Atoms are morereactive, and therefore more likely to bond, when their outer elec-
  tron orbitals are not full. Atoms are less reactive when these outer orbitals contain
  the maximum number of electrons. This explains why the noble gases do not react.


• Lewisnotation is one way of representing molecular structure. In Lewis notation,
  dots and crosses are used to represent the valence electrons around the central atom.


• When atoms bond, electrons are either shared or exchanged.

Chemistry: Matter and Materials 121