1.1 Matter

Chad's General Chemistry Videos

Course Menu

Chad's Ultimate General Chemistry Prep

Mastery Through Practice
chads videos sample quiz min
  • 90 Quizzes Arranged by Topic
  • 17 Chapter Tests
  • 3 Practice Final Exams
  • Over 1200 Questions
  • Detailed Solutions
  • Gen Chem Study Guides

Matter Vocabulary

Element - a substance that can't be broken down into a simpler substance

Ex) Na, Si, H2,, S8

 

Compound - a substance composed of more than one element

Ex) CO2, NaCl, NaHCO3

 

Pure Substance - any single element or any single compound

 

Mixture - A combination of more than one substance (element and/or compound)

 

Homogeneous Mixture - A mixture with uniform composition

Ex) Air, salt water (unsaturated solution)

 

Heterogeneous Mixture - A mixture lacking uniform composition

Ex) Paint, oil/vinegar salad dressing

 

Chemical Change - a change that involves the conversion of at least one substance into a different substance

 

Physical Change - a change in which no substances are converted into different substances

 

Intensive Property - -A property independent of sample size

Ex) Melting point, boiling point, density

 

Extensive Property - A property dependent upon sample size

Ex) Mass, volume

 

Precision - Of or relating to how close multiple measurements of the same value are to each other (independent of how close they are to the true value)

 

Accuracy - The degree to which a measurement corresponds to the ‘true’ value.