Simulations of chemical equations
Balancing a chemical equation
Watch the first of our simulations of chemical equations. How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!
Reactants, products and leftovers
Create your own sandwich and then see how you can make many sandwiches with different amounts of ingredients. Do the same with chemical reactions. See how many products you can make with different amounts of reactants, products and leftovers Can you get a perfect score on each level?
Law of Definite Proportions
The law of definite proportions, also known as the law of constant proportions, is one of the fundamental principles of chemistry. It states that in a chemical compound, the elements are always present in a fixed and definite proportion in terms of their mass. For example, in water (H2O), the ratio of hydrogen to oxygen by mass is always 2:16, or in terms of atoms, there are always two hydrogen atoms for every oxygen atom.
Observe in this simulation how in a reaction between hydrogen and oxygen. In a reaction between hydrogen and oxygen to form water, two atoms of hydrogen combine with one atom of oxygen to form a water molecule. Hydrogen and oxygen always react in a 2:1 ratio to form water.
Giants of science
“If I have seen further, it is by standing on the shoulders of giants”
Isaac Newton
John Dalton
–
William Henry
–
Become a giant
Basic Steps in Magnetic Resonance
Basic Analytical Chemistry
Preparing for CLEP Chemistry: Part 1
Big Bang and the Origin of Chemical Elements
Pre-University Chemistry
Professional development for Educators
BlendedX: Blended Learning with edX
How to Learn Online
Higher education teaching in the age of AI
Teach computing: Support SEND learners with computing
