Bozeman Science
Molecular, Ionic, and Net Ionic Equations
In this video Paul Andersen shows you how to write balanced equations that describe chemical changes. He then gives you a short introduction to balancing equations and uses the PHET site to practice this skill. In aqueous solutions an...
Bozeman Science
A Beginner's Guide to Balancing Equations
Mr. Andersen explains the basics of balancing chemical equations. A visual guide shows you how to change coefficients to balance the atoms in reactants and products.
Curated Video
Bunsen burner
A small gas burner commonly used in laboratories for heating and sterilising. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
Elements vs Alloys
We compare melting points of lead and tin to the melting point of their alloy, solder. By timing how long it takes samples of each to melt, we discover that the melting point of solder is actually lower than those of both lead and tin....
Curated Video
Flame Test
We use a Bunsen burner to burn different chemical salts to see how the flame colour changes. This shows that sodium burns with a yellow flame, lithium burns with a red flame, barium burns with a yellow-green flame and copper burns with a...
Curated Video
Ball and Hoop
We use a metal ball and hoop to demonstrate heat expansion. When cool, the ball fits through the hoop, but there is little extra space. The ball is then heated over a Bunsen burner. When hot, the ball doesn't fit through the hoop. We see...
Curated Video
Hero's Engine
We use a Hero's engine model to show how equal and opposite forces can cause propulsion. Two holes are pierced in a metal bottle and some water is added. This is suspended above a Bunsen burner, and as the water boils and leaves the...
Curated Video
Screaming Jelly Baby
We add a jelly baby to a boiling tube containing potassium chlorate. When the chemicals react, gas is rapidly produced. The screaming sound is created as the gas escapes from the tube. The sweet burns brightly as the reaction occurs....
Curated Video
Extracting Lead
We discover how to extract lead from lead(II) oxide. We mix lead(II) oxide with charcoal powder and then heat the mixture using a Bunsen burner. It glows bright red as a reaction occurs and after a few minutes we are left with pure lead....
Curated Video
Forming Iron Sulfide
We examine the different properties of iron and sulfur when they are mixed and when they are chemically combined. When iron and sulfur are mixed they retain their individual properties. When they react chemically to form iron sulfide...
Curated Video
GCSE Chemistry - Filtration, Evaporation & Crystallisation #6
In this video we'll look at: - How filtration can be used to separate insoluble solids from a liquid - How evaporation can be used to separate a soluble solid from a solution - How crystallisation can be used to separate a soluble from a...
Curated Video
GCSE Chemistry - Neutralisation Reactions #36
This video covers how acid react with different types of bases - metal oxides, metal hydroxides, and metal carbonates. It also covers the practical technique of how to make soluble salts from an insoluble base. This video is suitable...
Curated Video
Preparation of Copper Sulfate: A Chemistry Practical Experiment
This video explains the process for preparing soluble salts through the reaction of dilute acids with soluble metals, metal oxides, metal hydroxides, or metal carbonates. The specific example of preparing copper sulfate from copper oxide...
Curated Video
Preparing Copper Sulfate Crystals: A Step-by-Step Guide
The video is a lecture presentation on the process of preparing copper sulfate crystals. The presenter explains the reaction between copper oxide and sulfuric acid that produces copper sulfate and water, and the challenges of obtaining a...
Curated Video
Purification of Water Experiments: The Effect of Distillation on pH and Salt Content of Seawater
The video is a lecture presentation on the purification of water experiments. The presenter carries out a series of short experiments to investigate the effect of distillation on the pH and salt content of seawater. The presentation...
Mazz Media
Lab Safety: Basic Safety Rules
In this live-action program viewers will learn the basic safety rules to be followed a laboratory setting. Students will come to understand that the effects of an accident will be reduced and minimized by wearing protective equipment or...
Curated Video
Chemistry Lab Safety Precautions and Hazards
This video discusses the different hazards and risks that can arise when carrying out chemistry experiments in a laboratory. It provides general safety precautions such as keeping workspaces clear and avoiding eating or drinking in the...
Curated Video
Amylase and pH Experiment - Observing Results
The video is the second out of three lecture presentations on an experiment involving amylase and pH. The presenter introduces Catherine, who performs the experiment and collects results. Equipment for the experiment is shown and...
Curated Video
Amylase and pH Experiment: Observing and Collecting Results
The video is the second of three lecture presentations on the amylase and pH experiment. It shows Catherine carrying out the experiment and collecting results. The presenter begins by discussing the equipment that Catherine is using,...
Curated Video
Thermal Properties of Water: Experiment on Obtaining Temperature-Time Graph of Melting Ice
This video is the second in a series about the thermal properties of water. It shows an experiment being carried out to obtain data for drawing a temperature time graph of melting ice. The experiment involves placing crushed ice in a...
Brainwaves Video Anthology
Ira Flatow - Teachers Make a Difference - My 7th Grade Teacher
Ira Flatow is the host of Science Friday, bringing 2 million radio and Internet listeners a lively, informative discussion on science, technology, health, space and the environment. Ira is president of Science Friday, Inc. and founder...
Curated Video
Alcohols as Fuels: An Experiment to Compare the Effectiveness of Different Alcohols as Fuels
The video is a lecture presentation about alcohols as fuels. The presenter explains how different alcohols react with oxygen in the air to produce carbon dioxide and water, and that these reactions are exothermic. The presenter then...
Catalyst University
Lab Exercise 1: Introduction to Microbiology
Lab Exercise 1: Introduction to Microbiology
Curated Video
Simple Distillation Experiment for Separating Ink and Water
The video is a lecture presentation on a simple distillation experiment. The presenter explains the process of separating a mixture of water and ink using simple distillation. The equipment required for the experiment is shown and is...