Kennedy Science Flashcards
A chemical reaction is…
When new reactants unbond and rearrange to make the products.
What is a Catalyst?
A catalyst is a substance that speeds up a chemical reaction.
Endothermic reactions are…
When more energy is put in to the reactants than is put out when the products form.
Exothermic reactions are…
When less energy is put in to the reactants than put out when the products form.
The difference between A chemical reaction and a physical reaction…
In a chemical reaction new substances are formed.
What are some reasons a chemical reaction has taken place?
A color change, when a precipitate is formed, when a temperature change, and when there is a gas released or fizz.
What is the law conservation of mass?
Matter is nor created nor destroyed.
Is this balanced or unbalanced?
4Al+3O2->2Al2O3
The reactants are on what side of the reaction?
The left side.
The products are on which side of the reaction?
The right side.
