Physical/Chemical
Chemical Reactions
Energy in Reactions
Types of Matter
Balancing Equations
100
This type of change alters the chemical bonds in a substance.
What is a chemical bond?
100
This is the name of the substances on the left side of a chemical equation
What are reactants?
100
This is absorbed to break bonds in the reactants
What is energy?
100
Zn + S → ZnS is this kind of reaction.
What is an Addition Reaction?
100
Balance MgF2 +Li2CO3 → MgCO3 +LiF
MgF2 +Li2CO3 → MgCO3 + 2 LiF
200
This type of change does not result in a new substance.
What is a physical change?
200
This law states that the number of atoms in the reactants must equal the number of atoms in the products
What is the Law of Conservation of Mass?
200
When a chemical reaction releases more energy than it absorbed
What is an exothermic reaction?
200
Cl2 + 2 KBr → 2 KCl + Br2 is this kind of reaction
What is a single-displacement reaction?
200
Balance H2 + O2 → H2O
2H2 + O2 → 2H2O
300
This type of change occurs when cooking a pancake
What is a chemical change?
300
These parts of a chemical reaction may include atoms, compounds, or energy
What are reactants and products?
300
This type of reaction will feel cool or cold to touch
What is an endothermic reaction
300
This type of reaction will change the nucleus of an atom
What is a nuclear reaction?
300
Balance Pb(OH)2 + HCl → H2O + PbCl2
Pb(OH)2 + 2 HCl → 2 H2O + PbCl2
400
This type of change occurs when a liquid evaporates.
What is a physical change?
400
This graph describes this kind of reaction
What is an endothermic reaction?
400
C4H12 + 7 O2 → 6 H2O + 4 CO2 is this kind of reaction
What is combustion?
400
Balance C4H12 + O2 → H2O + CO2
C4H12 + 7 O2 → 6 H2O + 4 CO2
500
Physical changes and chemical changes have this natural law in common
What is the law of conservation of mass?
500
This is the amount of energy required to start a chemical reaction
What is activation energy?
500
This is this kind of reaction
What is a precipitation reaction?
500
Balance Na3PO4 + CaCl2 → NaCl + Ca3(PO4)2
2 Na3PO4 + 3 CaCl2 → 6 NaCl + Ca3(PO4)2
600
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
is this kind of reaction
What is an exothermic reaction?
600
This type of addition reaction results in several molecules being combined to form one long chain
What is polymerization?