Curated OER
Size of Atoms - Trends
This compendious collection of slides leaves no questions when it comes to the concept of atomic size. Thorough and easy-to-read graphs, tables, and graphics explain atomic radii, the shielding effect, the octet rule, isoelectric...
Curated OER
2001 U.S. National Chemistry Olympiad National Exam Part II
Only eight problems are on this competitive national chemistry exam. It required the balancing of chemical equations, solving stoichiometry questions, and more. This is part two of three of the national exam. Also available is a local...
College Board
2017 AP® Chemistry Free-Response Questions
More than 83,000 scholars earned college credit, thus saving time and money by passing the AP Chemistry exam in 2017. Use the exact test questions covering concepts from activation energy to solubility to prepare for the upcoming...
College Board
2018 AP® Chemistry Free-Response Questions
2018 saw some of the highest AP Chemistry scores in years. The College Board released each test question covering topics from enthalpy to net ionic equations, as well as scoring guidelines and more to benefit future scientists. Example...
Science Geek
Valence Electrons
There is a lot of negativity when studying electrons, but this presentation makes the experience more positive by beginning with the definition of a valence electron and breaking down the number of valence electrons by groups on the...
Virginia Department of Education
Atomic Structure: Elements
It's all relevant, really. Individuals use the scientific method to learn more about elements, atoms, and their placement on the periodic table. They conduct experiments using materials common in nature to explore how elements affect our...
Bellevue College
Practice Drawing Lewis Structures
Twenty-six elements, compounds, and ions are randomly listed for chemistry whizzes to analyze. They are to diagram the Lewis electron dot structure for each, resulting in further insight on the configuration of different molecules. They...
Curated OER
Organic Chemistry Problem Set Exam 1
Though there are technically only 13 questions on this exam, they take up six pages and make a thorough assessment of organic chemistry principles. There are plenty of diagrams to label or complete. Emission spectra are displayed for...
Curated OER
Why and How Atoms Combine
Here is a top-notch handout to supply your chemistry class with. It covers valence electrons, Lewis diagrams, the octet rule, and more! Technically it is less of a worksheet than a detailed explanation of these chemical bonding concepts....
Curated OER
Amazing Carbon
Explore carbon and bonding with this learning exercise. First, class members read a short excerpt about carbon and its characteristics. In response to the reading, they draw an electron dot diagram of carbon as well as diagrams of...
Curated OER
Worksheet 13 - Chemical Bonding
Here is a thorough review of chemical bonding! Seventeen problems query chemistry learners about electron configuration and ionic bonding, sharing electrons and covalent bonding. Chemistry masters draw Lewis dot diagrams and answer...
Curated OER
Covalent Bonds
After a short introduction, chemistry aces get right into drawing electron dot diagrams for covalent bonds. There are only three questions to answer, so this is not a comprehensive worksheet. It can be used when introducing your class to...
Curated OER
Recognizing Polar Molecules
In this polar molecules worksheet, students complete a graphic organizer by writing in the bond type, electron dot diagram, and the type of compound for the chemical compounds given.