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ChemQuiz.net LLC

@chemquiz.net

ChemQuiz.net - free Chemistry practice quizzes for students, LMS for Chemistry teachers to create custom assignments and track student progress. Free for high-poverty schools! More info at ChemQuiz.net/about

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ChemQuiz.net LLC @chemquiz.net · 3w ago

September 2026 ChemQuiz.net newsletter: new Question Types feature, webinar on Tuesday Sep. 15, bug fixes, and more! #chemed #iteachchem mailchi.mp/chemquiz.net...

ChemQuiz.net September 2026 newsletter 🏫: new Question Types feature, webinar Tue. Sep. 15, and more!

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ChemQuiz.net LLC @chemquiz.net · 5mo ago

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?".

ChemQuiz.net LLC @chemquiz.net · 6mo ago

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"

PhysQuiz.net @physquiz.net · 6mo ago

The PhysQuiz.net March 2026 newsletter is out, which includes information about the new accommodations and modifications settings, a new webinar on Tuesday, March 24th, and more. Check it out and let me know what you think! #physicsed #iteachphysics mailchi.mp/physquiz.net...

A screenshot from the PhysQuiz.net Dashboard shows the new Accommodations & Modifications feature that allows teachers to alter assignments for students with special needs

ChemQuiz.net LLC @chemquiz.net · 7mo ago

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.

PhysQuiz.net @physquiz.net · 7mo ago

The February PhysQuiz.net newsletter is out! Topics include a new Calorimetry Quiz, a new timer feature, a webinar on Wednesday February 25th, font options for assignments, and more! Check it out here: mailchi.mp/physquiz.net... #physics #physicsed #iteachphysics

A drawing shows a scientist drinking from a styrofoam cup that was intended to be used as a simple calorimeter instead of drinking from the coffee cup in their other hand, thinking "wrong coffee cup."

A screenshot from the Magnetism Quiz on PhysQuiz.net shows the new timer feature in the upper right corner as a partially-filled green ring with "3:14" displayed below the ring and a pink arrow pointing at the timer ring

A screenshot from the PhysQuiz.net Dashboard shows the seven new font options available for assignments: Arial, Consolas, Courier New, Garamond, Georgia, Helvetica Neue (default), and Times New Roman

ChemQuiz.net LLC @chemquiz.net · 8mo ago

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:"

PhysQuiz.net @physquiz.net · 8mo ago

The January PhysQuiz.net newsletter is out! Topics include a new Flashcards feature for Question Banks, additional Dashboard features, a webinar on Tuesday January 20th, new pricing, and more! Check it out here: mailchi.mp/physquiz.net... #physics #physicsed #iteachphysics

January 2026 newsletter 🎆: Flashcards, new Dashboard features, Zoom webinar 1/20, new pricing, and more!

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ChemQuiz.net LLC @chemquiz.net · 9mo ago

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

ChemQuiz.net LLC @chemquiz.net · 10mo ago

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

ChemQuiz.net LLC @chemquiz.net · 11mo ago

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

ChemQuiz.net LLC @chemquiz.net · 12mo ago

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

ChemQuiz.net LLC @chemquiz.net · 12mo ago

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

PhysQuiz.net @physquiz.net · last yr.

The PhysQuiz.net September 2025 newsletter! Coulomb's Law diagrams, AP® Physics 1 & 2 exemplars, pop-out calculator, and more #physics #physicsed #iteachphysics mailchi.mp/physquiz.net...

PhysQuiz.net September 2025 newsletter: ⚡️Coulomb's Law diagrams, AP® exemplars, pop-out calculator, and more!

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ChemQuiz.net LLC @chemquiz.net · last yr.

I was looking for a clean and simple periodic table that was easy to read with a fixed-width serif font that clearly differentiated between lowercase L, uppercase i, and 1. I couldn't quite find what I wanted, so I made my own! 0.001 precision here #chemed #iteachchem docs.google.com/document/d/1...

ChemQuiz.net Periodic Table (0.001 precision)

ChemQuiz.net Periodic Table of the Elements 1 18 1 1 H hydrogen 1.008 2 atomic number Symbol element name atomic mass 13 14 15 16 17 2 He helium 4.003 2 3 Li lithium 6.94 4 B...

docs.google.com

ChemQuiz.net LLC @chemquiz.net · last yr.

Come join the first ever ChemQuiz.net Dashboard webinar on Monday, August 18th at 7pm Eastern/4pm Pacific! Find out about new features, ways to streamline your assignments, and other tricks for getting the most out of ChemQuiz.net. Register for free at: us06web.zoom.us/meeting/regi...

Welcome! You are invited to join a meeting: ChemQuiz.net Dashboard overview, tips and tricks!. After registering, you will receive a confirmation email about joining the meeting.

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ChemQuiz.net LLC @chemquiz.net · last yr.

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

ChemQuiz.net LLC @chemquiz.net · last yr.

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

ChemQuiz.net LLC @chemquiz.net · last yr.

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?"

ChemQuiz.net LLC @chemquiz.net · last yr.

Just published a new Photoelectron Spectroscopy (PES) Quiz to ChemQuiz.net! Question types include identifying elements and subshells from PES graphs, selecting the most correct graph for elements, and writing out electron configurations. Try it out now at chemquiz.net/pes #chemed #iteachchem

Photoelectron Spectroscopy (PES) Quiz : ChemQuiz.net

This free practice quiz will help you learn to read and identify electron configurations in photoelectron spectroscopy (PES) graphs!

chemquiz.net

ChemQuiz.net LLC @chemquiz.net · last yr.

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...

ChemQuiz.net LLC @chemquiz.net · last yr.

The ChemQuiz.net May 2025 newsletter is out! This month's newsletter includes important updates about the new Images upload feature for Question Banks, a new quiz anti-cheating feature, and more. Check it out here: mailchi.mp/chemquiz.net... #chemed #iteachchem

ChemQuiz.net May 2025 newsletter: 📸 Images upload, anti-cheating feature, and more!

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ChemQuiz.net LLC @chemquiz.net · last yr.

The ChemQuiz.net April 2025 Newsletter is out! Topics include: • *NEW* Electrochemistry Quiz! ⚡️ • *NEW* radioactive half-life problems! ☢️ • Important short survey on LMSs • Site license renewals for 2025-2026 school year Check it out here: mailchi.mp/chemquiz.net... #chemsky #chemed #iteachchem

ChemQuiz.net April 2025 newsletter: new Electrochemistry Quiz⚡️, LMS survey, and more!

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ChemQuiz.net LLC @chemquiz.net · last yr.

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

ChemQuiz.net LLC @chemquiz.net · 2y ago

The ChemQuiz.net March 2025 newsletter is out! It includes information about the new Rubrics feature, which allows you to score assignments using your own custom rubrics, as well as lots of other improvements and bug fixes mailchi.mp/chemquiz.net... #chemed #chemsky #iteachchem

ChemQuiz.net March 2025 newsletter: Rubrics, new question types, bug fixes and more!

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ChemQuiz.net LLC @chemquiz.net · 2y ago

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

ChemQuiz.net LLC @chemquiz.net · 2y ago

Thanks for the shout-out, we're glad ChemQuiz.net makes your job a little easier!

@mrbchemnhs.bsky.social · 2y ago

My students wonder why I carry some many colorful pens, it's so I can make the keys easier to read! Also gotta love @chemquiz.net as a problem source to save time #education #ITeachChem #chemistry #EduSky

ChemQuiz.net LLC @chemquiz.net · 2y ago

The ChemQuiz.net February newsletter out! Topics include a new question type for the Nuclear Reactions Quiz, new "tolerance" options for student answers, and more! You can read it here: mailchi.mp/chemquiz.net... #chemed #chemsky #iteachchem

ChemQuiz.net February 2025 newsletter: new quiz features, custom images in Question Banks, and more!

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PhysQuiz.net @physquiz.net · 2y ago

PhysQuiz.net is now on BlueSky! Here's the January 2025 Newsletter, which includes important information about the new Questions Bank feature, several new quiz and Dashboard features, and lots of bug fixes. #physics #iteachphysics #physsky mailchi.mp/physquiz.net...

PhysQuiz.net January 2025 newsletter: new Question Banks, new features, a special offer and much more!

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ChemQuiz.net LLC @chemquiz.net · 2y ago

Happy New Year! 🥳 The ChemQuiz.net January 2025 newsletter is out and contains the following important information about new custom Question Banks, new Dashboard features, a special offer for new customers, and more! Check it out here: mailchi.mp/chemquiz.net... #chemsky #chemed #iteachchem

ChemQuiz.net January 2025🎉 newsletter: new Question Banks, new Dashboard features, special offer and more!

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