Pages in this set

Page 1

Preview of page 1
Atoms & Reactions
The Atom

Mass number (the top) = protons + neutrons Atomic number (the bottom) = protons.
Isotopes have the same chemical properties, due to same election configuration but different physical properties e.g.
densities due to a different mass.

Atomic Models

John Dalton ­ Solid spheres, different spheres…

Page 2

Preview of page 2
Balancing Equations

With ionic equations balance charges too (so add electrons (e-))

Equations and Calculations

Calculating masses
o Write out the balanced equation for the reaction.
o Work out how many moles of reactant you have.
o Use the molar ratio from the balanced equation to work out the number…

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »