The Law of Conservation of Mechanical Energy is explained here.

Learn the mechanics behind how a hydraulic motor works, some different types of hydraulic motors, and their applications in industry.

Learn the difference between a piston pump and a diaphragm pump, both of which are positive displacement pumps. Includes chart listing characteristics for each, their different types, and their advantages and disadvantages.

Read about two types of rain gauges and how they work.

Read about the different types of welding and how they are done.

A phase converter is a special device used to convert electric power from a single-phase source into three-phase power in situations where that is required. Learn the difference between a static phase converter and a rotary phase converter.

An alnico magnet is a special type of magnet that combines several metals in order to adapt the magnet for different applications. Learn about their properties, the different types, how they are manufactured, and what they are used for.

Potassium chlorate acts as a catalyst to produce oxygen. Read about some of its uses, including in fireworks and as a water disinfectant.

Three methods of making invisible ink are demonstrated with illustrations and step-by-step instructions.

Learn two methods of making a dry cell battery using simple materials. Some materials would need to be purchased and adult supervision is recommended.

Discusses the pros and cons of using lithium-ion batteries.

Learn about the history of electricity and the scientists involved in investigating it and inventing machines related to it.

This article explains the chemical composition of washing soda and of baking soda and how each is used.

Baking soda has a variety of uses, including for household cleaning and for baking. Read about its chemical formula and its common reactions.

Provides a long list of famous scientists and their significant discoveries and inventions.

Explains what acids and bases are and some of their properties, and gives examples of acid-base reactions.

Explains what a decomposition is and gives examples of different types and their chemical equations.

This resource lists the different types of chemical reactions and gives examples of chemical changes that are seen in everyday life.

Explains what a single replacement, or displacement, reaction is; describes the two types - cation and anion replacement reactions; and gives examples of chemical reaction equations for each.

Learn about the important role the petri dish plays in enabling the study of microorganisms, some of its uses, and how petri dishes are used.

Learn what a Buchner funnel is, how it works to filter solids from liquids, and some of its applications.

Explains what is meant by dehydration synthesis and gives examples. Also compares it to hydrolysis.

Discusses what tongs are used for and why crucible tongs are a very important tool in a laboratory and other settings. Describes the different types of crucible tongs, their uses, and some safety tips.

While diamonds are extremely hard and strong, they are not indestructible. Learn how diamonds can be burned, melted, or dissolved.