Chapter 1: Introduction
•
Hypotheses may evolve into theories, which are unifying principles that explain a body of
facts and/or those laws that are based on them.
•
Chemical properties can only be observed if a chemical change is carried out.
•
An extensive property depends on the amount of matter that is being considered.
•
An intensive property does not depend on the amount of matter being considered.
•
SI stands for International System of Units.
•
Temperature: Kelvin scale
•
To convert into Kelvin scale, ? K = (°C + 273.15 °C)
•
To convert Fahrenheit to Celsius, use ?°C = (°F – 32) * 5 °C
9 °F
•
Mass is the measure of the quantity of matter in an object while weight is the force that
gravity exerts on an object.
•
Density = Mass
Volume
•
When using scientific notation, subtract exponents that are being divided, and add
exponents that are being multiplied.
•
For sig figs, any zeros before numbers are not significant, but after they are. When using
scientific notation, the amount of zeros after the decimal + dictates the number of sig figs. For
example, 7.000 x 10
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '10
 Solomons
 Chemistry, Scientific Notation, Atom, Sig Figs, oxidation numbers, kelvin scale, element molar mass

Click to edit the document details