Chemistry
Measurement and Moles
Chemistry
Unit Description:
In this unit we will focus on the mathematical tools we use in science, especially chemistry – the metric
system and moles.
We will also talk about how to gauge the accuracy and precision of our measurements.
The Big Questions
1. How do we measure things in chemistry?
2. Why are units so important?
3. How accurate and precise are my measurements and how can I show this in my calculations?
4. How can I move between different measurement units?
5. What the heck are moles and why are they important?
Chapter 2: Data Analysis and Problem-solving
You should be able to...

Read a chemical formula for type of elements and number present

Perform calculations using scientific notation QUIZ 3

Use metric prefixes to convert metric units

Apply dimensional analysis to chemistry problems

Calculate density

Find density, mass, volume, height, width and length, when given all but one of the values

Use significant figures in measurements and calculations

Convert temperatures from Kelvin to Celsius and vice-versa

Determine the uncertainty of a measurement

Determine percent error LAB QUIZ MOLES

Draw and interpret graphs

Distinguish between the accuracy and precision of a measurement
QUIZ 4
QUIZ 5
Chapter 11: Moles
You should be able to...

Define Avogadro’s number

Perform conversions between moles and # particles

Find molar masses of elements, using the periodic table

Determine molar masses of compounds, given the chemical formula and using the periodic table

Perform conversions between moles and molar mass of elements or compounds

Perform conversions between molar mass and # particles

Perform conversions involving the # atoms of an element in a compound

Solve problems involving any combination of the above-listed conversions

Determine percent composition of elements in a compound

Determine empirical formula of a compound from the masses or percent composition of elements in a
QUIZ 6
QUIZ 7
compound

Determine molecular formula of a molecule from mass or percent composition and molecular molar
mass

Calculate solution concentrations in terms of mass percent and molarity

Find mass or volume of molar solutions, given two of the three variables – molarity, mass, volume