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ChemQuiz.net LLC @chemquiz.net · 03/05/2026

The ChemQuiz.net May 2026 newsletter includes the following important updates: ➡️ *NEW* quiz features! ➡️ *NEW* VPAT/Accessibility Conformance Report (ACR) ➡️ Share your thoughts about ChemQuiz.net! ➡️ Bug fixes and other improvements Check it out at mailchi.mp/chemquiz.net... #chemed #iteachchem

A screenshot from the Acid-Base Neutralization Quiz on ChemQuiz.net shows a question with a balanced chemical equation between perchloric acid and lithium hydroxide that reads: "How many mL of 0.053 M lithium hydroxide (LiOH) would be necessary to neutralize 180.0 mL of 0.0540 M perchloric acid (HClO)?"

A screenshot from the Organic Nomenclature Quiz on ChemQuiz.net shows a diagram of an organic compound with the question prompt, "Write the most correct chemical formula for the compound shown below:".

A screenshot from the Stoichiometry & Limiting Reagents Quiz on ChemQuiz.net shows the new "Start with/Solve for (simple stoichiometry problems only)" advanced option with all options currently selected.

A screenshot from the Stoichiometry & Limiting Reagents Quiz on ChemQuiz.net shows a question with the balanced chemical reaction between aluminum bromide and chlorine gas which reads, "If 8.40 grams of AlBr3 are reacted, how many grams of Br2 will be produced?".

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ChemQuiz.net LLC @chemquiz.net · 01/04/2026

The ChemQuiz.net April 2026 newsletter is out! Topics include the new problem types for bond enthalpy, chemical equilibrium and LeChâtelier's Principle, and pH & pOH to molarity calculations. Plus, lots of bug fixes, and info about the book I revised! #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from the Enthalpy Calculations Quiz on ChemQuiz.net shows two example problems for calculating bond enthalpy values: "What is the enthalpy change (∆H) in kJ/mol for orthosilicic acid when its bonds are formed? The bond enthalpy values are: D(Si-O) = 368 kJ/mol; D(O-H) = 467 kJ/mol" and "What is the enthalpy of reaction (∆Hrxn) in kJ/mol for this reaction? The bond enthalpy values are D(N#N) = 945 kJ/mol; D(O=O) = 498 kJ/mol"

A screenshot from the Chemical Equilibrium Quiz on ChemQuiz.net shows an example Le Chatelier's Principle problem that reads: "Consider the following reaction: Fe2O3(s) + 3 CO(g) <-> 2 Fe(s) + 3 CO2(g) The system is at equilibrium when the amount of Fe2O3(s) is increased. If all other physical properties of the system remain constant, in which direction will the reaction be shifted as a result of this change?"

A screenshot from the Chemical Equilibrium Quiz on ChemQuiz.net shows two example pH calculation problem that read: "A solution of perchloric acid (HClO4) is measured to have a pH of 1.06. What is the concentration of this solution in M?" and "The concentration of a hydrobromic acid (HBr) solution is 7.66 × 10^-5 M. What is the pH of this solution?"

A photo of Chris Carman, a 51-year old white man wearing a green t-shirt and holding a yellow book titled "Barron's AP Computer Science A 13th Edition"

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ChemQuiz.net LLC @chemquiz.net · 01/03/2026

The ChemQuiz.net March 2026 newsletter is out, which includes information about the new accommodations and modifications settings, a new webinar on Tuesday, March 24th, pop-out features for Question Banks, and more. Check it out! #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from the ChemQuiz.net Dashboard shows the new Accommodations & Modifications feature that allows teachers to alter assignments for students with special needs: Diagram color, Font size, Given values simplification, Multiple choice override, Multiple choice options reduction, and Timer multiplier

A screenshot from the ChemQuiz.net Dashboard shows settings options for the pop-out calculator, pop-out periodic table, and pop-out electronegativities table

A screenshot of a slide from the "Women in Chemistry" slide deck is titled "Darshan Ranganathan" and reads: Darshan Ranganathan was an organic chemist from India who was known for her work in bio-organic chemistry, including "pioneering work in protein folding." She created a protocol which achieved the autonomous reproduction of imidazole, an ingredient of histidine and histamine with pharmaceutical importance. As her career developed, she became a specialist in designing proteins to hold a wide variety of different conformations and designing nanostructures using self-assembling peptides.

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ChemQuiz.net LLC @chemquiz.net · 01/02/2026

The February ChemQuiz.net newsletter is out with lots of NEW stuff to announce: a quiz timer, Beer-Lambert Law problems, font options for your assignments, answer explanations on the Naming Compounds Quiz, and more! #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from the Calorimetry Quiz on ChemQuiz.net shows the new timer feature as a partially colored green ring in the upper right corner, with the time "6:02" displayed below the ring and a pink arrow pointing at the ring

A screenshot from the ChemQuiz.net Dashboard shows a new "Font to use for questions" option on the Assignment Settings page that lists the following fonts: Arial, Consolas, Courier New, Garamond, Georgia, Helvectica Neue (default), Times New Roman

A screenshot from the Concentrations & Colligative Properties of Solutions Quiz on ChemQuiz.net shows an example of the new Beer-Lambert Law problems, which reads "A 7. x 10^-5 M solution of NADH with a molar absorptivity of 6200 M^-1 cm^-1 at 340 nm is measured in a spectrometer using a 1.00-cm cuvette. What is the absorbance of this solution?"

A screenshot from the ChemQuiz.net Dashboard shows an answer explanation from the Naming Compounds & Calculating Molar Masses Quiz for that reads:
"iron (II) acetate
The first ion (iron) is a metal, so use the ionic compound formula rules. Start by writing out both ion formulas:
Fe C2H302
Then, determine the charge for each ion. The Roman numeral for iron is (Il), so its charge is 2+. The charge for acetate ion is always 1-. Write these two ion formulas together with their respective charges: Fe^2+ C2H3O2^-
Since the ion charges are not equal but opposite, you will need to balance them out to make a neutral compound.
Copy the charge from the positive ion (2) so that it's to the right of the negative ion: Fe^2+ C2H3O2^-
Because acetate is a polyatomic ion, put parentheses around it so that the multiple subscripts aren't confusing:
Fe^2+ (C2H3O2^-)^2
Rewrite the final formula without the charges:"

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ChemQuiz.net LLC @chemquiz.net · 05/01/2026

Happy New Year, everybody! 🎆 I just sent out the January 2026 ChemQuiz.net newsletter, which includes important updates: ➡️ NEW Flashcards and Dashboard features! ➡️ Zoom webinar on Tue 1/20 at 7pm ET ➡️ Updated pricing Check it out and lmk what you think! #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from ChemQuiz.net shows an example of the new Flashcards feature that reads "Group 1 elements, form 1+ ions"

A screenshot from ChemQuiz.net shows an example of the new Flashcards feature with a light green background that reads "alkali metals"

A screenshot from ChemQuiz.net shows an example of the new Flashcards feature that reads "determined that there was a nucleus in every atom with the gold foil experiment" and shows a simple diagram of the experimental setup

A screenshot from ChemQuiz.net shows the new Flashcard options when creating or editing an Assignment

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ChemQuiz.net LLC @chemquiz.net · 30/11/2025

The latest ChemQuiz.net newsletter is out! It contains information about a webinar about the Exams feature this upcoming Wednesday at 7pm ET/4pm PT, some new quiz features, lots of bug fixes, and a fun electron configuration game #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot of a reaction rate graph from the Kinetics & Rate Laws Quiz on ChemQuiz.net shows the change in concentration over time for a fictional chemical

A screenshot shows the title screen for the free ElectronJump game at ElectronJump.app

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ChemQuiz.net LLC @chemquiz.net · 14/10/2025

The ChemQuiz.net October 2025 newsletter is out! 🎃 Topics include new pop-out periodic tables, Dashboard features to help you save time, a Webinar about Question Banks & more on Wed 10/29, lots of bug fixes, the Walk to End Alzheimer's, and more! #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from ChemQuiz.net shows the new pop-out periodic table feature displaying molar masses of elements

A screenshot from ChemQuiz.net shows the new pop-out periodic table feature displaying electronegativity values of elements

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ChemQuiz.net LLC @chemquiz.net · 05/10/2025

Just added a new feature to most of the quizzes - pop-up periodic table! If your students happen to misplace their periodic table or you've activated tab-switch detection on an assignment, they can now use this instead. The pop-up calculator works alongside it, too! #chemed #iteachchem

A screenshot from ChemQuiz.net shows the new pop-up periodic table feature, which displays all of the elements with their element numbers, symbols and masses as well as different colors for each category (metals, metalloids, nonmetals and unknowns)

A screenshot from ChemQuiz.net shows the new pop-up periodic table feature when the mouse is hovering over the square for element 26, which has expanded and is showing the element name "iron" instead of its element symbol

A screenshot from ChemQuiz.net shows the new pop-up periodic table feature alongside the existing pop-up calculator feature

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ChemQuiz.net LLC @chemquiz.net · 22/09/2025

Happy Fall! 🍁 The ChemQuiz.net September 2025 newsletter is out and highlights new features on the site, including Topics to organize assignments on the Dashboard, an easy-to-read downloadable periodic table, a live webinar on September 30th, and more #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot of the new easy-to-read downloadable periodic table from ChemQuiz.net

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ChemQuiz.net LLC @chemquiz.net · 08/08/2025

Tivy High School is a ChemQuiz.net school that's located in Kerrville TX, which was devastated by flooding this past July. Please consider helping their public school by donating to the Kerrville Public School Foundation, which gives out teaching grants and student scholarships! #chemsky #iteachchem

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ChemQuiz.net LLC @chemquiz.net · 08/08/2025

The August ChemQuiz.net newsletter is out! It includes information about the new PES and Coulomb's Law quizzes, as well as other new features across the site such as requiring students to round their answers using correct sig figs. Check it out! #chemsky #iteachchem mailchi.mp/chemquiz.net...

A screenshot of the PES Quiz at ChemQuiz.net shows a photoelectron spectroscopy graph below the question, "Which electron subshell is identified by the arrow in the following PES spectrum?"

A screenshot of the Coulomb's Law Quiz at ChemQuiz.net shows a diagram of an atom below the question, "The atomic radius of polonium (Z = 84) is 1.35 × 10^-10 m. What is the magnitude of the electric force on its outermost electron?"

A screenshot of the pop-up calculator that is now available on most of the quizzes on ChemQuiz.net

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ChemQuiz.net LLC @chemquiz.net · 20/06/2025

Just added the Coulomb's Law Quiz to ChemQuiz.net! Borrowed from PhysQuiz.net, the quiz now features diagrams and a new question type to calculate the force between an atom's nucleus and its outermost electron. Check it out & let me know what you think! chemquiz.net/cou #chemed #iteachchem #chemsky

A screenshot from the Coulomb's Law Quiz at ChemQuiz.net (https://chemquiz.net/cou/) shows a diagram of a polonium nucleus and its outermost electron with the question, "The atomic radius of polonium (Z = 84) is 1.35 × 10^-10 m. What is the magnitude of the electric force on its outermost electron?"

A screenshot from the Coulomb's Law Quiz at ChemQuiz.net (https://chemquiz.net/cou/) shows a diagram of an iodine nucleus and its outermost electron with the question, "The nucleus of iodine (Z = 53) exerts -9.22 × 10^-7 N of force on its outermost electron. What is the atomic radius of iodine?"

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ChemQuiz.net LLC @chemquiz.net · 17/06/2025

Forgot to add the screenshots!

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ChemQuiz.net LLC @chemquiz.net · 02/06/2025

The June 2025 ChemQuiz.net newsletter is out! Topics include an end of the school year survey, a chance to win a $50 gift card, annual site maintenance, planned new features for next school year, and some personal news about my oldest kid graduating! #chemed #iteachchem mailchi.mp/chemquiz.net...

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ChemQuiz.net LLC @chemquiz.net · 29/03/2025

Just published a new Electrochemistry Quiz to ChemQuiz.net! Problem types including calculating standard emf, ranking ions by strength, determining spontaneity, and free energy, Nernst equation and electrolysis calculations. Try it out and share your feedback! #chemed #iteachchem chemquiz.net/elc/

A screenshot from the new Electrochemistry Quiz on ChemQuiz.net shows the six different problem types that are available for students and teachers to generate

A screenshot from the new Electrochemistry Quiz on ChemQuiz.net shows a "calculate the standard emf for this reaction" problem

A screenshot from the new Electrochemistry Quiz on ChemQuiz.net shows a Nernst equation problem

A screenshot from the new Electrochemistry Quiz on ChemQuiz.net shows an electrolysis problem

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ChemQuiz.net LLC @chemquiz.net · 17/02/2025

New feature for ChemQuiz.net Dashboard users: Rubrics! Now you can have your assignments automatically scored using a rubric based on your specifications. More info here: chemquiz.net/docs/teacher... #chemsky #chemed #iteachchem

a screenshot of a 4-point rubric on the ChemQuiz.net Dashboard based on the percentage of correct answers on an assignment

a screenshot of a 2-point rubric on the ChemQuiz.net Dashboard based on the total number of correct answers on an assignment

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ChemQuiz.net LLC @chemquiz.net · 03/12/2024

The ChemQuiz.net December 2024 newsletter is out, featuring details about the new Intermolecular Forces Quiz, bug fixes and more! #chemsky #chemed #iteachchem mailchi.mp/chemquiz.net...

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows the types of questions the quiz can generate.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows a question about intermolecular forces found in hydrogen peroxide.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows a question asking which substances experience dipole-dipole interactions.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows a question about ranking the strength of intermolecular forces in three substances.

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ChemQuiz.net LLC @chemquiz.net · 01/12/2024

Just published a new Intermolecular Forces Quiz, try it out and let me know what you think! #chemsky #chemed #iteachchem chemquiz.net/imf

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows the question, "Which of the following correctly ranks the strength of the intermolecular forces of ClFO3, H2SO4 and XeCl2 in decreasing order?" with four options from which to choose.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows the question, "Select all substances that experience dipole-dipole interactions" with four substance options and "none of the above" from which to choose.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows the question, "What intermolecular forces are experienced by hydrogen peroxide (H2O2)? Select all that apply." with three options from which to choose.

A screenshot from the new Intermolecular Forces Quiz on ChemQuiz.net shows the question, "From least to greatest, rank the boiling points of BrF3, CF4 and IF7." with four options from which to choose.

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