This video/animation asks the question "So if the same molecules are in …
This video/animation asks the question "So if the same molecules are in the solid, liquid, and vapor forms of water, why are their properties so different?" The properties of a material are affected not just by the kinds of atom in it, but also by how they are arranged, and how free they are to move around. Forms of carbon are introduced, from graphite to buckyballs. [1:30]
Check your understanding of how to use the atomic number and the …
Check your understanding of how to use the atomic number and the mass number to represent different isotopes. [9:43]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Video tutorial explains the difference between atomic weight and atomic mass in …
Video tutorial explains the difference between atomic weight and atomic mass in chemistry, and how it compares to the physics definitions of weight and mass. [8:53]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
An explanation of the sizes of different atoms due to the number …
An explanation of the sizes of different atoms due to the number of electrons that are orbiting in energy shells. [11:25]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
The difference between atomic weight and atomic mass in chemistry, and how …
The difference between atomic weight and atomic mass in chemistry, and how it compares to the physics definitions of weight and mass.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
This video segment adapted from A Science Odyssey takes a look at …
This video segment adapted from A Science Odyssey takes a look at the scale of the atom and the tremendous amount of space between the electrons and the nucleus. If all this empty space exists in matter, how can any substance be solid?
This video segment adapted from A Science Odyssey takes a look at …
This video segment adapted from A Science Odyssey takes a look at the scale of the atom and the tremendous amount of space between the electrons and the nucleus. If all this empty space exists in matter, how can any substance be solid? [1:15]
In this activity, students will explore how the Law of Conservation of …
In this activity, students will explore how the Law of Conservation of Energy (the First Law of Thermodynamics) applies to atoms, as well as the implications of heating or cooling a system. This activity focuses on potential energy and kinetic energy as well as energy conservation. The goal is to apply what is learned to both our human scale world and the world of atoms and molecules.
Both of these lessons are classroom activities that require students to build …
Both of these lessons are classroom activities that require students to build models that display understanding of atoms and molecules. One lesson is structured while the other is guided.
Chemistry is the study of matter, and all matter is made up …
Chemistry is the study of matter, and all matter is made up of atoms. We will learn about elements, atomic number and mass, isotopes, moles (chemistry moles, not the animal), and compounds.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
In this lesson, the students will discover the relationship between an object's …
In this lesson, the students will discover the relationship between an object's mass and the amount of space it takes up (its volume). The students will also learn about the concepts of displacement and density.
Learn about modern animals who, like dinosaurs, use fancy features to grab …
Learn about modern animals who, like dinosaurs, use fancy features to grab the attention of possible mates. Then, use what you learned to create the most attention-grabbing dinosaur display since the Mesozoic!
In this simulation of a doctor's office, students play the roles of …
In this simulation of a doctor's office, students play the roles of physician, nurse, patients, and time-keeper, with the objective to improve the patient waiting time. They collect and graph data as part of their analysis. This serves as a hands-on example of using engineering principles and engineering design approaches (such as models and simulations) to research, analyze, test and improve processes.
Are farmers paid fairly? Does race play a role in food insecurity? …
Are farmers paid fairly? Does race play a role in food insecurity? Is our food system broken? "At The Table" is a Twin Cities PBS Original series, in partnership with the Cargill Foundation, that addresses the social and systemic issues within our food environment. This Collection consists of 12 videos for Grades 6-8, 9-12.
How many fast-food restaurants does your neighborhood have? Grocery stores? The different …
How many fast-food restaurants does your neighborhood have? Grocery stores? The different food establishments -- or lack thereof -- in a neighborhood often dictates the community's food outcomes. Spanish captions and transcript also available. [3:07]
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