Energy
Combustion of propane releases heat and is an example of this type of reaction.
What is an exothermic reaction
An amount of a substance that contains approximately 6.02 x 1023 particles.
What is a mole
These reactions have 2 reactants that bond to form 1 product.
What is a Synthesis reaction.
You are never allowed to adjust these numbers when balancing equations.
What are subscripts.
Is the following chemical reaction Endothermic or exothermic?
2Cu + O2 --> 2CuO + 315 kJ
What is a Exothermic.
A covalently bonded group of atoms that has a positive or negative charge and acts as a unit.
What are polyatomic Ions
This reaction ALWAYS has O2 as a reactant.
What is a combustion reaction.
The mass of the reactants will always be equal to this.
What is the mass of the products.
A chemical reaction speeds up when this is added to the reaction.
What is heat.
Photosynthesis is an example of this type of reaction.
What is an endothermic reaction
Compounds made of only 2 elements
What are Binary Compounds
What is an Endothermic reaction.
Beryllium (Be), and Chlorine (Cl) form a binary ionic compound with a 1:2 ratio of Beryllium to Chloride. What is the formula for the formula of the resulting compound?
BeCl2
The energy source of photosynthesis.
What is light or the sun.
The total energy present before and after a chemical reaction does this.
What is remains the same or is conserved.
The number that is placed in front of reactants or products to balance the chemical reaction.
What are coefficients.
This reaction is sometimes called an ionic reaction because it involves two ions switching places during the reaction.
What is a double displacement reaction.
Butane burns with the balanced chemical equation:
2C4H10 + O2 --> 10H2O + 8CO2
If 2 moles of butane are burned, how many moles of water are produced?
10
These two types of reactions are opposites of one another.
What are synthesis and decomposition reactions.
This happens to energy whenever a chemical bond is formed.
What is it is released.
These symbols are found on the left side of a chemical equation.
What is a reactant.
This type of reaction involves a cation bonds with the anion of a compound.
What is a single displacement reaction.
Balance the following single replacement reaction by replacing the ? in the product compounds:
Zn + 2HCl --> Zn?Cl? + H?
ZnCl2 + H2
The two products produced during a combustion reaction involving a hydrocarbon reacting with oxygen.
What are carbon dioxide and water.