Chemical Reactions
In the formula 5CaSO4, this is the number of oxygen atoms.
What is 20?
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 that enters a chemical reaction is called this.
What is a reactant?
This type of change occurs with a change in the properties of a substance that is usually reversible.
What is physical?
DOUBLE JEOPARDY!!!!!!!!!!
C3H8 + O2 ----> 3CO2 + 4H2O
is this type of chemical reaction.
This type of reaction typically starts with two or more reactants and ends with one product.
What is a synthesis reaction?
DOUBLE JEOPARDY!!!!!!!!!!!!!
This is where an element has to be on an activity series in order to replace another element in a chemical reaction.
What is "higher in the list"?
A molecule consisting of two atoms. Ex: O2 or H2
What is diatomic?
The symbolic representation of a chemical reaction that includes symbols and formulas.
What is a Chemical Equation?
These are the 5 types of chemical reactions.
What are synthesis, decomposition, single replacement, double replacement, and combustion reactions?
DOUBLE JEOPARDY!!!!!!!!!
An expression in which words are used to represent a chemical reaction.
What is a word equation?
In this reaction, the ions of two compounds exchange places in an aqueous solution to form two new compounds.
What is a double-replacement reaction?
State the Law of Conservation of Mass.
What is that matter can not be created or destroyed in a chemical reaction?
When balancing an equation, these numbers can not be changed.
What is a subscript?
DOUBLE JEOPARDY!!!!!!!!!!!!!
A solid that forms from a solution during a chemical reaction.
What is a precipitate?
This is how an activity series is created.
Scientists in a lab perform multiple experiments to determine the reactivity of a group of elements. They then order them from most active to least active.
The reaction 2HgO ---> 2Hg + O is an example of this type of reaction.
What is decomposition?
In this reaction, one element replaces a similar element in a compound.
What is a single-replacement reaction?
Give three examples of details showing 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 following chemical reaction:
H2 + NaCl --> HCl + Na
H2 + 2NaCl --> 2HCl + 2Na
An increase in temperature will usually cause the rate of reaction to ________________.
What is "increase"?
Balance the reaction:
Na + H2O --> NaOH + H2
What is
2Na + 2H2O --> 2NaOH + H2
This type of reaction involves breaking down the chemical composition. Often times more products than reactants result.
What is a decomposition reaction?