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The Periodic Table and Energy Level Models

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Students will focus on the first 20 elements. Students will first look at a diagram and animation to understand the basic pattern of the arrangement of electrons on energy levels around an atom. Students can be given cards with information about the electrons and energy levels for each of the first 20 atoms. They can try to correctly match the cards with the element. This lesson includes, with direct links to, a student activity sheet, an image of an energy level cross section, an image of an oxygen atom, an image of a periodic table of energy levels, videos on sodium in water, potassium in water and calcium in water as well as sodium, potassium and calcium in acid, an answer key for the student activity sheet and a teacher background section on energy level models.

Material Type: Lesson Plan

Author: Patti Galvan and Jim Kessler

Energy Changes in Chemical Reactions

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In this interactive lesson, students will conduct two chemical reactions. In the first, the temperature will go down (endothermic) and in the second, the temperature will go up (exothermic). Students will view an animation to review the concept that it takes energy to break bonds and that energy is released when new bonds are formed. Students will use this idea to explain why a reaction is either endothermic or exothermic. Linked into this lesson is a student activity sheet, a video on thermite reaction, a video on Nitrogen triodide reaction, a White Phosphorus Reaction video, a Methane Combustion Energy animation, an image showing a baking soda and calcium chloride reaction, an image showing a baking soda and vinegar reaction, both an endothermic and exothermic reaction animation as well as an answer sheet for the student activity sheet and teacher background information on exothermic and endothermic chemical reactions.

Material Type: Lesson Plan

Author: Patti Galvan and Jim Kessler

Changing Matter: Getting Warmer

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Whenever a chemical change occurs, there are often changes in the physical properties of the substance that undergoes the change. Remember how different a fried egg looks from the raw egg? In this activity, students test the temperature and see how this physical property changes as a result of chemical change.

Material Type: Activity/Lab

Author: Utah Lesson Plans

Chemistry: Classifying Chemical and Physical Changes in Various Materials/Substances

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In this lab activity, students will investigate the characteristics of a chemical change. Students will also provide a definition of what constitutes a physical change through observation of several examples. Students will develop (through discussion) and use the criteria for identifying a chemical change. Several examples of a chemical change will also be observed for students to compare to physical changes. The students will use the five characteristics of chemical change to determine/judge whether or not baking soda, citric acid and water creates a chemical change. Students will write down observations of the reaction and use the five characteristics to explain why it is in fact a chemical reaction (The five characteristics will be listed for use).

Material Type: Activity/Lab, Lesson Plan

Author: Nikki Schilling, Minnesota Science Teachers Education Project

Discover Space Probes

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In this lesson, students watch a video about space probes and discuss the function of space probes. They use a photo gallery to compare and contrast different structures and equipment of probes, and make connections between the different structures and purposes of space probes. Then students use an interactive diagram of the Cassini space probe to imagine what instruments they might include on a probe of their own design.

Material Type: Lesson Plan

Author: Anna Mika

Fractions and Chemistry

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In this problem set, learners will practice fractions by working with the ratios of various molecules or atoms in different compounds to answer a series of questions. Answer key is provided. This is part of Earth Math: A Brief Mathematical Guide to Earth Science and Climate Change.

Material Type: Activity/Lab

Author: Dr. Sten Odenwald

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