A reaction in which chemical bonds are broken or formed.
Chemical Reaction
Chemical substances that are produced in a reaction.
Products
True or False? During a chemical reaction, no atoms are lost and no new atoms are produced.
True
Type of reaction, which requires more energy to be supplied than it releases. (Absorb heat energy)
Endothermic
What evidences suggest a chemical reaction has taken place? (Two)
Color Change; Gas Released; Smells; Precipitate Forms; Temperature Change
Chemical substances that are used in a reaction
Reactants
True or False? During a chemical reactions, the atoms are simply rearranged into new combinations.
True
True or False? Phase change is an evidence of a chemical reaction.
False
Type o reaction in which heat energy is released by forming the chemical bonds in the product.
Exothermic
True or False? Many chemical reactions require energy or release it. This causes the temperature to decrease or increase
True