Chemical Reactions Flashcards
1
Q
Chemical reaction
A
Process in which atoms are arranged to produce new substances.
2
Q
Chemical equation
A
Expression to show the relationship between reactants and products.
3
Q
Reactants
A
The substances that participate in (start) chemical reaction.
4
Q
Products
A
The substance formed in a chemical reaction. (Cake is a good example of chemical reaction with the products in the cake)
5
Q
Laws of conservation of mass
A
Mass cannot be created or destroyed.
6
Q
Coefficients
A
Number in front of a chemical formula. Can change to balance an equation.
7
Q
Endothermic reaction
A
Chemical reaction with an input of energy.
8
Q
Exothermic reaction
A
Chemical reaction with an out put of energy.
