Chemical Reactions Practice Test Flashcards
(19 cards)
The general formula for a ____________________ reaction is
AB->A+B
Decomposition
Balancing a chemical equation so that the same number of atoms of each element is present both before and after the reaction is an illustration of
Conservation of matter/mass
The general formula for a __________________ reaction is
A + B -> AB
Synthesis
A bonfire is an example of a(n)_________________ reaction
Exothermic
In which type of reaction do the parts of two compounds switch places
Double replacement
A(n) ____________ lowers activation energy
Catalyst
The matter present after a reaction takes place is called a(n)
Product
One indicator of a chemical reaction is
Gases forming
One indicator of a chemical reaction is
Gases forming
In the formula H O the 2 is a
Subscript
When an atom loses e- a(n) __________________ is formed
Ion
Any substance that enters into a chemical reaction is called a(n)
Reactant
A chemical reaction where an uncombined element replaces an element that is part of a compound is called a(n). __________________ reaction.
Single replacement
An increase in temp. Will usually cause the rate of reaction to increase
Increase
An ionic bond is formed when electrons are
Exchanged
If there is a chemical reaction and energy is released the reaction is called a(n)
Exothermic
As a result of an endothermic chemical reaction energy is
Absorbed
When a chemical reaction occurs, there is always a change in
Energy
Hand warmers are an example of a(n)
Exothermic reaction
