Balancing Reactions
If you have 4 oxygen atoms on the reactant side, how many must be on the product side?
4 oxygen atoms
What type of reaction occurs when two substances combine to form one product?
What is Synthesis
In a chemical reaction, what do we call the substances that undergo change?
What is Reactants
The energy that is stored in an object
What is potential energy?
What do you add in front of a compound to balance an equation?
What is a coefficient
What type of reaction occurs when a compound breaks into simpler substances?
What is Decomposition
What do we call the new substances formed in a chemical reaction?
What is products
Rust forming on metal is a PHYSICAL or CHEMICAL change?
What is chemical change
What are the numbers at the bottom right of an element called?
Subscript
Name all five types of chemical reactions.
Synthesis, Decomposition, Single Replacement, Double Replacement, Combustion
Change in heat, is the same as a change in ________
What is energy?
2 different compounds exchange ions and make 2 new compounds. What type of reaction does this describe?
What is Double Replacement
Balance this equation: _H₂ + _O₂ → _H₂O
2H₂ + O₂ → 2H₂O
Identify the type of reaction: NaCl + AgNO₃ → AgCl + NaNO₃
What is Double Replacement
In the equation 2H₂ + O₂ → 2H₂O, how many molecules of water are produced?
What is 2 molecules
What does a single replacement reaction involve?
What is one element replaces another in a compound
A chemical reaction occurs, and the temperature of the surroundings decreases. What type of reaction is this?
What is Endothermic Reaction
Balance the equation:
_C₃H₈ + _O₂ → _CO₂ + _H₂O
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
What type of reaction is CH₄ + 2O₂ → CO₂ + 2H₂O?
What is Combustion Reaction
What law that we talked about a lot last semester and in the stations lab is being satisfied when balancing a chemical equation?
What is law of conservation of mass
In a combustion reaction, what will always be the two products formed?
What is CO2 and H2O
What type of reaction is used in hand warmers? Exothermic or Endothermic
What is Exothermic?