Pages in this set

Page 1

Preview of page 1
1.2 Elements of Life

Spectroscopy ­ The study of how light and matter interact, based of the principle that under certain
conditions, a substance can absorb or emit electromagnetic radiation

Absorption Spectra Emission Spectra

Absorption Spectra ­ Coloured background, dark lines
Emission Spectra ­ Black background, coloured likes

Wave theory…

Page 2

Preview of page 2
Particle Theory

Light is regarded as a stream of tiny energy packets called photons
The energy of a photon relates to its position on the electromagnetic spectrum

Bohr's theory
The electrons in an atom exist only in certain definite energy levels/electron shells/quanta
When an atom is excited, its electrons jump…

Page 3

Preview of page 3

Flame tests

Ion Colour Picture

Li+ Bright Red

Na +


Page 4

Preview of page 4

Ca2+ Brick Red

Ba2+ Apple Green

Cu 2+
Blue Green


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »