Penetrating Properties of Radiation



Radioactivity. What is it? Should we b

e worried?

It was Marie Curie who first used the word radioactive to describe a phenomenon discovered by Becquerel in 1896. It...

What are the properties of Alkali metals? What is ionic bonding? What are the most reactive elements of Alkali? What is known about Lithium? Why is Lithium the least reactive? What can Lithium be alloyed with?

Periodic Table of...

Lee is working in the materials laboratory. He measures the weights of various small pieces of metal. The table shows the sheet where he recorded the different weights. What is the total weight in ounces of the metals that were measured...

English grammar lesson on how to order adjectives correctly. Many examples. Brainstorming. Practice activity.

Development of Quantum Mechanics: Photoelectric Effect Example 1

The video explains the process of finding the formula of a metal oxide through experimental means. The presenter explains two methods of determining the formula - forming the metal oxide from the metal and reducing the metal oxide to...

In this English speaking lesson you’ll come along with me to look for a new bed! Why’s it have to be so difficult to find a new bed?! We’ll learn phrasal verbs, vocabulary and lots of spoken English quick tips! If you’re looking to...

This video covers:<br/>
1) What is<br/> a capsule?
2) Interpr<br/>eting Microscope Image

Learn the basics about Behaviour of metallic structures. How many types of metallic structure do you know? and what are their purposes? Find out more in this video!

Learn the basics about what salts are, as part of the overall topic of acids and bases.

It explains salts, namely normal, acidic, basic, double, mixed and complexed salts.

The reactivity of an element is a function of how easily an element loses or gains electrons. To determine an element's reactivity, we can learn a lot from the periodic table, and its particular trends. The first element in the halogen...

In calorimetry experiments we measure heat transfer. Say we take a hot piece of metal and put it in some cold water, and measure the rise in temperature of the water as the system equilibrates. Can you use this information to calculate...

In this video you will see how this list can help us predict if a chemical reaction will proceed and how to name the products which shows displacement reactions.

Create "lightning" in your living room! Make giant sparks by building up static charge on a homemade 2-plate capacitor, and discharging through a grounded rod. Watch as my friend Ashley agrees to touch the charged-up capacitor. How is it...

Explain the smelting process of aluminium. How is spent pot lining used after aluminium has been smelted? Explain how bauxite is refined.<br/>
Smelting And Refining Aluminium, Part 2

It's time to check out Group 1 on the periodic table, the alkali metals. This includes lithium, sodium, potassium, rubidium, cesium, and francium. What can we say about their properties, reactivities, and applications? Let's find out!

Fireworks expert Matthew Tosh demonstrates the colour chemistry behind different coloured fireworks lances, linking this to flame tests that can be done in the class room. KS3 and KS4 Chemistry

A light bulb has the glass carefully removed, leaving the glass base and filament intact. The bulb is connected to AC electricity, and the filament quickly and dramatically burns out. This leaves the two wires that originally...

Crystal Field Stabilization Energy (CFSE) 1: Introduction

The video discusses transition metals, their properties and where they are commonly found in the periodic table. The presenter provides information on the physical and chemical properties of transition metals, including their...

It explains the different types of materials around us and their sources.

The Chelate Effect Makes Complexes More Stable

Not everybody has the equipment to melt aluminum, but pewters low melting point makes metal-casting available to everybody! Its melting point is so low, you can melt it in your kitchen.



Pewter is mostly tin, with a little...