Chemical Reactions
Mass is neither created or destroyed in a chemical reaction.
The Law of Conservation of Mass
The number in front of the elements in a chemical formula.
Coefficient
The number of atoms in the following equation:
2Na3Cl6
18 atoms
The subatomic particles found in the nucleus of an atom...
Protons & Neutrons
RIP stands for:
Reactants into Products.
The number below the element or compound in a chemical formula.
Subscript
H2O -->2H + 02 is balanced? True or False
False:H2 + O would be balanced.
The subatomic particle with a negative charge:
Electron
The sentence we learned to remember evidence of a chemical reaction.
Never serve green peas ever to children.
The elements, molecules or compounds that react in a chemical reaction:
Reactants
Balance the following equation:
N2 + F2 --> NF3
N2 + 3F2 --> 2NF3
Electrons can be found here:
Electron Cloud
5 Evidences of a Chemical Reaction:
1. New Substance
2. Gas
3. Precipitate
4. Energy
5. Color Change
Define Products:
The resulting substance created in a chemical reaction.
Balance the following equation:
P4 + O2 --> P2O3
P4 + 3O2 --> 2P2O3
What determines an element's identity?
Protons
Define Chemical Reaction:
CO2 is an example of a:
Chemical Formula.
How many atoms in the following molecule:
C10H12N2O
25 atoms
______________ determine an elements chemical properties and reactivity.
Valence Electrons