Все публикации

0:07:18

Quantitative Chemistry Thermal Decomposition mass changes when a product or reactant is gas compress

0:06:15

Quantitative Chemistry Percentage Composition by Mass How to calculate percentage composition mass

0:04:50

Quantitative Chemistry Relative Formula Mass Calculate Relative formula mass AQA GCSE Chemistry

0:10:51

Quantitative Chemistry Balancing Equations GCSE AQA Chemistry

0:08:53

Quantitative Chemistry Conservation of mass AQA GCSE Chemistry

0:06:26

Atoms Elements & Compounds AQA GCSE Chemistry

0:06:47

Enthalpy change long answer solved

0:05:18

Enthalpy change calculation IB Chemistry

0:05:39

Enthalpy of combustion calculation IB Chemistry Thermodynamics

0:03:51

Energetics Calculating Enthalpy changes IB Chemistry question with answer

0:01:38

What is atomic radius? Explaining atomic radius or atomic radii.

0:02:29

Why do chemical reactions happen ? What causes a chemical reaction and makes substances react?

0:01:51

what is a compound. Explain how to describe a compound in science.

0:03:11

What is oxidation number. How to explain the Oxidation number.

0:02:16

What is an Ion ?

0:02:09

What is Density

0:02:28

What is the mass and charge of particles.

0:03:02

What is an Atom

0:02:21

How to define an Element

0:12:11

Lewis structure on nitrate ion NO3-

0:05:00

How to calculate oxidation state of polyatomic ions

0:06:31

How to calculate percentage yield Chemistry

0:04:29

reacting masses example

0:05:26

Hess's Law explained using delta H formation values