• Read the Question!
• What do you want to know?
• What do you know?
• Are there any handy formulas?
• Which Formula?
• Do the Math
• Make sure the UNITS are correct
want to Know?
• Read the question carefully, beware of
distractors, Sometimes the question is in
several steps, so it may be asking you
several questions! – What are they?
What do you Know?
• In the question, it will give you certain
information, Some information comes from
outside (what you have learned, basic
facts [atomic mass, gravitational force], or
things you will have to look up.
• You might want to make a list of those
things.. (some of those may be
Are there any Handy Formula?
• There are often – in Physics and
Chemistry – useful formulas!!!
• Make a list of the relevant ones for the
• Have a list of all the formulas in your
Or do you have to modify it?
If you memorize one basic one. eg.
Molar Mass = g / Mole
That means, algebraically you know:
g = Moles x Molar Mass
Moles = g / Molar Mass
Do the Math
• Dimensional Analysis
I put together these power points for use in
my science classes.
You may use them in your classes.
Some images are public domain, some
are used under the fair-use provisions of
the copyright law, some are mine.
Copyright is retained by the owners!