Terms & Background
A chemical reaction occurs when one or more substances (_______________) rearrange into new substances (_______________).
Reactants, Products
The description 'two or more substances combined to make one' defines which type of reaction? What is the equation?
Synthesis, A + B --> AB
Which of the following are signs of a chemical reaction?
- Temperature Change
- Formation of a Solid
- Change in Shape
- Change in Texture
Temperature Change, Formation of a Solid
Write ‘A’ for every atom, ‘M’ for every molecule, and ‘C’ for every compound: H2, Be, NaCl, He2, Mg
M, A, C, M, A
What is the large number before an atom/molecule/compound? What is the small number after an element?
Coefficient, Subscript
Who is "The Father of Modern Chemistry?"
Antoine Lavoisier
The description 'one substance breaks down into smaller ones' defines which type of reaction? What is the equation?
Decomposition, AB --> A + B
Which of the following are signs of a chemical reaction?
- Color Change
- Change in Size
- Gas Production
- Change in State of Matter
Color Change, Gas Production
Write ‘A’ for every atom, ‘M’ for every molecule, and ‘C’ for every compound: CH4, Li, CO2, S8, H
C, A, C, M, A
What is the first step when balancing equations? Do it with this equation:
H2 + O2 --> H2O
H: H:
O: O:
Count the number of atoms on the reactant side and on the product side.
H2 + O2 --> H2O
H: 2 H: 2
O: 2 O: 1
Antoine Lavoisier wrote the first _______________ book – it defined the Law of _______________ of _______________ in _______________.
Chemistry, Conservation, Mass, 1789
What is the description of a single-replacement type of reaction? What is the equation?
One element replaces another in a compound, A + BC --> AC + B
Which of the following are signs of a chemical reaction?
- Change in Mass
- Odor Change
- Light Production
- Sound Production
Odor Change, Light Production, Sound Production
Write ‘A’ for every atom, ‘M’ for every molecule, and ‘C’ for every compound: C, Ne, KI, H2O2, O
A, A, C, C, A
Multiply top to bottom to balance just as below. Where would this coefficient go?
H2 + O2 --> H2O
H: 2 H: 2 * 2
O: 2 O: 1 * 2
H2 + O2 --> 2 H2O
H: 2 H: 4
O: 2 O:2
What is the Law of Conservation of Mass?
Matter cannot be created or destroyed during a chemical reaction, only rearranged.
What is the description of a double-replacement type of reaction? What is the equation?
Two compounds switch parts, AB + CD --> AD + CB
List all of the signs of a chemical reaciton.
Color Change, Gas Production, Temperature Change, Formation of a Solid, Odor Change, Light Production, Sound Production
Write ‘A’ for every atom, ‘M’ for every molecule, and ‘C’ for every compound: H2O2, F6, Na, LiCl, Fe3H
Finish balancing the equation below:
H2 + O2 --> 2 H2O
H: 2 H: 4
O: 2 O:2
H2 + O2 --> 2 H2O
H: 2 * 2 H: 4
O: 2 O:2
2 H2 + O2 --> 2 H2O
H: 4 H: 4
O: 2 O:2