Chemical Reactions
two or more elements combining into one product
synthesis
What coefficient needs to be added to the reactant side to balance this equation?
___CH₄ + ___O₂ → CO₂ + 2H₂O
2 in front of oxygen
This is required to start the breaking of bonds during a chemical reaction
activation energy
The Law of Conservation of mass says that the mass and the number of atoms of each element has to be the same on the product side as the reactant side of an equation
True
asexual cell division
mitosis
one substance breaks down into two or more simpler substances
decomposition
Identify this reaction
2Ag + Cl ₂ → 2AgCl
synthesis
State the Law of Conservation of Mass
mass of reactants = mass of the products
# of atoms of each element of the reactant = # of atoms of each element of the product
The left side of the equation is called the...
Reactants
Wegener proposed the theory of ....
Continental Drift
when one element replaces an element in the original compound to form a new compound
single displacement
The coefficient on the product side tells you what?
2Ag + Cl ₂ → 2AgCl
The number of Ag atoms needed to be balanced with the Ag on the product side
elements rearrange
The number of atoms of each element in a chemcial formula is denoted by using a...
subscript
genetics
when two ionic compounds swap partners - two new compounds are formed
double displacement
How many total oxygen atoms are found on the reactant side?
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
12
Which two types of elements combine to make ionic bonds?
metals and nonmetals
a substance that lowers the activation energy is called ...
a catalyst
A human being has this number of chromosomes in their body cells
46
when a reaction releases heat and light when CO₂ or O₂ is in the product
combustion
What is the coefficient needed in the product side to balance the equation?
6CO₂ + 6H₂O → _____C₆H₁₂O₆ + ____O₂
a 6 in front of oxygen
The large number added to the beginning of individual elements or compounds to balance a chemical equation
coefficient
A physical change does not change the matter's ...
identity - it stays what it was
The layer of the atmosphere closest to Earth
troposphere