Chemical Reactions
In the formula 3CaSO4, this is the number of oxygen atoms.
What is 12?
A substance that enters a chemical reaction is called this.
What is a reactant?
In an exothermic reaction, the products will have ______ energy than the reactants
what is LESS
DOUBLE JEOPARDY!!!!!!!!!!
C3H8 + O2 ----> 3CO2 + 4H2O + heat
is a ___________ chemical reaction.
what is exothermic
This type of change occurs when a substance or multiple substances rearrange, in which a new substance is created.
What is a chemical change?
A substance with a pH less than 7
What is an acid
DOUBLE JEOPARDY!!!!!!!!!!!!!
A chemical reaction in which energy is absorbed.
what is endothermic
Identify the products of this reactions
H2 + NaCl --> HCl + Na
what is HCl and Na
DOUBLE JEOPARDY!!!!!!!!!
An expression in which symbols and formulas are used to represent a chemical reaction.
A chemical equation
A substance with a pH more than 7
What is a base
When balancing an equation, these numbers can not be changed.
What is a subscript?
DOUBLE JEOPARDY!!!!!!!!!!!!!
An acid reaction produced carbon dioxide when an acid reacts with a _____
what is a metal carbonate
An increase in temperature will usually cause the rate of reaction to ________________.
What is increase?
This Contains 2 or more different atoms chemically combined, also categorized as a molecule
What is a Compound?
Give three examples that a chemical change has taken place.
What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?
Balance the reaction: Na + H2O --> NaOH + H2
What is 2Na + 2H2O --> 2NaOH + H2
Rearranging the chemical composition. Often times the same or fewer products than reactants.
What is a Combining Reaction?
State the Law of Conservation of Mass.
What is that matter can not be created or destroyed in a chemical reaction?