This activity is a lab where students will be working with chemical changes and reactions. It's a simple activity that can be done with household items.
Definition of mixture and examples, homogeneous and heterogeneous mixtures, types of mixtures and how to separate mixtures.
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Definition of mixture and examples, homogeneous and heterogeneous mixtures, types of mixtures and how to separate mixtures.
A free CK-12 account is required to view all materials.
Definition of physical change and examples, and how physical changes can be reversed.
A free CK-12 account is required to view all materials.
In this video David Caprette, PhD, discusses the types and properties of mixtures prepared and/or encountered in a biological laboratory. He also introduces basic lab equipment, terms and concepts related to formulas, and the concept of the mole. [33:24]
Explore kitchen chemistry as Ruff Ruffman learns that mixing the right ingredients matters when creating a colorful dessert. [5 min, 8 sec]
In this science experiment, you will learn about density while making water fireworks!
This lab is a two part investigation on separating a solid from a liquid where students are asked to develop their own investigable question and carry out the experiment on day two.
This is a lab activity where students will investigate solubility or miscibility of eight substances with water.
This activity is a small-group activity that makes students learn the subject matter of aqueous solutions (colloids, suspensions) and phase changes by writing a children's book. Learning by teaching.
Have you ever wondered how some insects are able to "skate" on the surface of water? We will learn about how intermolecular forces make this possible. We will also cover liquids, solids, mixtures, and phase changes.
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What's in macaroni salad? Break down the pasta, mayonnaise, vinegar, mustard, vegetables, etc., and you're left with a bunch of molecules. Josh Kurz uses a delicious recipe to exemplify three types of mixtures (solution, colloid and suspension), while reminding us that we're all made of the same stuff. [3:57]
In this activity students will create their own toothpaste exploring and experiementing with natural ingredients.
Learn about the classification of matter based on whether the chemical composition is pure or a mixture. Understand the definitions of elements, compounds, substances, and mixtures, and what the differences are between them. Five types of mixtures are explained, and the symbols used to represent elements in chemical formulae.