chemical-reactions
Resources

TED-Ed: The Law of Conservation of Mass
Everything in our universe has mass — from the smallest atom to the largest star. But the amount of mass has remained constant throughout existence even during the birth and death of stars, planets and you. How can the universe grow while maintaining its mass? Todd Ramsey answers that question by unravelling the law of conservation of mass.

The chemistry of cookies - Stephanie Warren
Explore the delicious science behind baking cookies.

TED-Ed: What Triggers a Chemical Reaction?
Chemicals are in everything we see, and the reactions between them can look like anything from rust on a spoon to an explosion on your stovetop. But why do these reactions happen in the first place? Kareem Jarrah answers this question by examining the two underlying forces that drive both endothermic and exothermic chemical reactions: enthalpy and entropy.

PhET: Reactants, Products and Leftovers
Create your own sandwich and then see how many sandwiches you can make with different amounts of ingredients. Do the same with chemical reactions. See how many products you can make with different amounts of reactants. Play a game to test your understanding of reactants, products and leftovers. Can you get a perfect score on each level?


PhET: Balancing 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!
