Using classical physics to calculate the energy of electrons in Bohr model. Solving for energy of ground state and more generally for level n. Created by Jay
Using equation for Bohr model radii to draw shell model for n=1 to 3, and calculating the velocity of a ground state electron. Created by Jay
Using classical physics and vectors, plus assumption that angular momentum of electron is quantized, to derive the equation for Bohr model radii. Created by Jay.
Starting from atoms, see how many molecules you can build. Collect your molecules and see them in 3D!
Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
This activity is a hands-on building of atoms of elements 1-20.
Chapter 3, Atoms: Buildings Blocks of Matter3.1 Atomic TheoryLearning Objectives 1. State the modern atomic theory. 2. Learn how atoms are constructed.
Chapter 3, Atoms: Buildings Blocks of Matter3.1 Atomic TheoryLearning Objectives 1. State the modern atomic theory. 2. Learn how atoms are constructed.
CK-12 Physical Science Concepts covers the study of physical science for middle school students. The 5 chapters provide an introduction to physical science, matter, states of matter, chemical interactions and bonds, chemical reactions, motion and forces, and the types and characteristics of energy.
The carbon cycle game is a short digital game that helps you teach how carbon atoms move through various forms including soils, the ocean, plant and animal life and fossil fuels. Actions such as photosynthesis, plant and animal death and forest fires all convert carbon from one form into another. This is a card style game. It allows for single or multi players. Runs on a browser.
Chemistry: Atoms First is a peer-reviewed, openly licensed introductory textbook produced through a collaborative publishing partnership between OpenStax and the University of Connecticut and UConn Undergraduate Student Government Association.
This title is an adaptation of the OpenStax Chemistry text and covers scope and sequence requirements of the two-semester general chemistry course. Reordered to fit an atoms first approach, this title introduces atomic and molecular structure much earlier than the traditional approach, delaying the introduction of more abstract material so students have time to acclimate to the study of chemistry. Chemistry: Atoms First also provides a basis for understanding the application of quantitative principles to the chemistry that underlies the entire course.
This is information to be used for a General Biology I (or Introduction to Biology) course for non-science majors.
How can we conduct scientific research so that we have evidence to support a claim?Students in this problem-based learning module are invited to design a testable question to guide Scientific Research, Evaluate the pH of various solutions, Identify Variables, Conduct a Scientific Investigation, and Analyze/Communicate results. How can we conduct scientific research so that we have evidence to support a claim? Antacid tablets are a multi-billion dollar industry. Claims are made regularly by certain brands that their extra strength tablets contain “DOUBLE the acid neutralizing power per tablet of regular strength antacids.” How effective are antacids? Are double-strength antacids twice as effective as regular strength antacids? Have you ever noticed a parent/guardian/family member take an antacid tablet? Stomach chemistry is about acids and bases. When the pH of a stomach is too acidic then it might make the person have a stomach ache. In some cases “heartburn” or “acid reflux” are used as terms to describe the problems some people face. Antacids are usually basic which, when taken, might help raise the pH level in a stomach thus making a person feel better.You are invited to design an investigation with a partner, or a team of 4 students, to test your own idea about the effectiveness of antacids. The challenge? Have a driving question, clear variable identification, and an analysis of your results. Materials for your test will be provided to you by your teacher. At the culmination of your investigation your design team will make a 30-second pitch on your phone to show at your family Thanksgiving meal to explain the benefits (or negatives) of using antacids, and how antacids work.
This interactive activity from ChemThink takes a closer look at a covalent bond--how it is formed and how the sharing of two electrons can keep atoms together.
In this video, David explains how Louis De Broglie got his Nobel Prize for the idea of matter having a wavelength.
Drawing two dimensional images of an atom.
So we know that all matter is made up of atoms, but what is an atom made out of? Chemists describe the structure of atoms using models. This section will cover the Bohr model, photoelectric effect, absorption and emission spectra, quantum numbers, and electron configurations.
In this electrochemistry activity, learners will explore two examples of electroplating. In Part 1, zinc from a galvanized nail (an iron nail which has been coated with zinc by dipping it in molten zinc) will be plated onto a copper penny. In Part 2, copper from a penny will be plated onto a nickel.
This OER discusses matter, elements, compounds, atoms, and the subatomic particles succinctly. It would be most effective if used as a supplement to a text, another website, some type of multimedia, and/or as a review on the subject. There are additional links and resources to support advance instructions and learning. The idea that students are able to work independently to improve their learning is an advantage to using this OER as an augmentation. It contains an assessment with hidden answers, which supports a check for mastery; it also requires some critical thinking skills.
How elements relate to atoms. The basics of how protons, electrons, and neutrons make up an atom. Created by Sal Khan.