Chemical Reactions Vocab Flashcards
(8 cards)
1
Q
chemical reactions
A
the process in which atoms are rearranged to produce new substances
2
Q
chemical equation
A
an expression to show the relationship between reactants and products
3
Q
reactants
A
the substances that participate in (start) a chemical reaction
4
Q
products
A
the substances formed in a chemical reaction
5
Q
law of conservation of mass
A
that matter cannot be created or destroyed
6
Q
coefficiant
A
the number in front of a chemical formula. Can change to balance an equation
7
Q
endothermic reaction
A
a chemical reaction with an input of energy
8
Q
exothermic reaction
A
a chemical reaction with an output of energy
