Curated OER
Periodic Trends
Chemists compare the electronegativity, ionization energy, electron affinity, and ionic radius of different elements. This activity is composed of 11 multiple choice questions, and 8 written explanations. Critical thinking skills are...
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Chapter 22 - 25 Review
In this chemistry review worksheet, learners explore their knowledge of solutions, acid and bases, nuclear reactions, and radioactive decay as they answer 33 matching, fill in the blank, and short answer questions.
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Periodic Table Basics Review Sheet
In this periodic table learning exercise, students complete a chart with the appropriate element symbol, the atomic mass and the atomic number. They classify elements by their groups and as metals, nonmetals or semi-metals. They also...
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Working with Half-Life
For this half-life worksheet, students use a given table of half lives, mass, time and amount of original sample to solve for unknowns in nine given half-life problems.
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Experimental Rate Law
In this reaction rate worksheet, students determine the molecularity of a reaction plus show that the predicted rate law equals the experimental rate law. This worksheet has 3 problems to solve.
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What are Atoms?
In this atom learning exercise, students read about Dalton's contributions to the structure of the atom. They answer five questions about Dalton's ideas, the law of multiple proportions and the law of definite proportions.
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Combined Gas Law Practice Sheet
In this combined gas law activity, students use the temperature, the pressure and the volume of gases to find the unknown temperature, volume or pressure of gases using the combined gas law.
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Early History of the Atom Homework
In this early history of the atom learning exercise, students answer 4 questions about Thomson's Plum Pudding model of the atom and Rutherford's experiment that led to the understanding of some of the structures of the atom.
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Matter and Chemical Bonding
In this chemical bonding worksheet, learners read about the invisible killer, dihydrogen monoxide. Students read about the products it is used in and the problems it causes to the environment. Then learners complete 19 short answer...