By: Angelique and Sharlanae

A formation of a percipitate can be a clue that a ______ ________ has taken place.

 Chemical reaction

 In a endothermic reaction, more _______ is absorbed than relesed.

 energy

 Many _______ makes up a chemical equation.

 Molecules

 What can increase the reaction rate in some chemical reactions?

 Stirring

 Give a clue to know how a chemical reaction has happened?

 Change in color  Change in temperature  Formation of a gas  Form of light

 What substances undergo a chemical change in a reaction?

 Reactants

 Adding heat can ______ reaction rates in most reactions.

 increase

 In a ________ there is not ________ in a compostition.

 Physical change  change

 What is needed to break chemical bonds?

 energy

 What ______ are listed after the arrow in a chemical equation?

 products