A polyatomic ion is an ion that is made up of multiple elements. Whenever we have a polyatomic ion present, we are not going to change the name at all. The name of the polyatomic ion will stay just as it is. So when we look at the ionic...

Learn all about single replacement chemical reactions. We'll break down the process and give examples to help you understand this important topic. Perfect for studying for your chemistry test or just brushing up on your knowledge.

Electronegativity is the tendency of an atom to gain an electron. The way I think about it is like tug of war. The stronger an atom can pull in an electron, the higher it’s electronegativity will be. The trend for electronegativity is...

The periodic trend for atomic size is that the size of the atom gets bigger as you go down the periodic table and from right to left across the periodic table. This trend is sometimes referred to as atomic radius as there is a direct...

This video covers:

0:43 - The number of electrons per energy
level
4:24 - why atoms react / why they lose or gain

electrons

This vi
deo is suit
able for:
- Al
l tiers
- All exam boards
- Triple and...

In this video we cover:

- How the electrolysis of soluble compounds w
orks
- The rules to find out which ions are discharge at each
electrode
- Electrolysis of aqueous
copper sulfate
- Electrolysis of...

This video covers:

0:21 - What a molecu
le is
1:11 - What a c
ompound is
3:11 - How to use brackets in a c
hemical formula
4:48

- What a mixture is
r/>This vid
eo is suitable for
:
- All tiers
- All exam...

Whether we look at the mass, Mr or number of atoms, the mass is always conserved in chemical reactions. However, it may sometimes appear as if the mass changes if some of our reactants or products are gases. We can fix this problem...

Limiting and Excess Reactants Explained. Often, in chemical reactions there will be less of one reactant that the other - we call this one the limiting reactant because how much reaction can take place. Whereas the more abundant reactant...

Everything you need to know about ionic bonding!



Ionic bonds form when one atom transfers electron/s to another atom, so that both atoms forms oppositely charged ions. These ions are then attracted to each other by...

This videos covers how to use state symbols to show the physical state that substances are in, and also how to predict the state from melting and boiling point data.



This video is sui
table for:
- Higher and F
oundation...

Learn who made the periodic table, why he arranged the elements this way and about the important groups you need to know.

What are alkali metals? Why are they so reactive? What are the trends as you go down the group? How do they react with water, oxygen and chlorine? Learn all this and more!

This video covers how atoms gain or lose electrons to form ions, why they bother, and how to tell which ion they'll become. <b<br/>r/>

Based on AQA course, but suitable for all exam boards.

Here's why cooking a turkey is so hard - and how brining can help.

Dr. Forrester defines the terms: molecule and compounds. She explains that every substance of matter is made up of atoms, and she discusses Dalton’s atomic theory.

Dr. Algae talks about The President’s Fitness Challenge and then introduces your student to an exercise called “curl-ups”.

Food Detective Berry Blue talks about why vegetables are such an important part of the Fabulous Five Food Groups. She explains the way vegetables grow and how they can be purchased fresh, canned, or frozen. She raves about the...

The Food Detective Berry Blue talks about one of the Fabulous Five Food Groups – Vegetables. She compares fresh vegetables to canned or frozen and raw vegetables to cooked vegetables.

Electrons and Ions describes what occurs in an atom when electrons are added or removed from the outer shell using the terms ion, bonding, gain, lose, and charge.

This video will explain the concept of a mole and how to convert between moles, grams, and atoms.

This video will explain the concept of a mole and how to calculate the molarity of a solution using concentration of solutions.

This brief video tutorial briefly discusses resting membrane potential: 0:00​​. Introduction 0:53. What is a resting membrane potential? 1:33. How is a RMP measured? 4:12. How do we get a RMP at cell membranes? 9:04. How is the RMP...

I got a lot of feedback from my last video. Now the table saw is back with FULL AUTO more explosions, and i shoot randy. Table saw vs christmas ornaments, oobleck, fish tank, balloons, and soda.