What is the difference between Covalent and Ionic Bonds?
- Covalent Bonds: Sharing of electrons, between metals
- Ionic Bonds: Transfer of electrons, metal to nonmetal
Covalent bonds typically occur between nonmetals, while ionic bonds occur between metals and nonmetals.
Why are valence electrons important in Chemistry?
They determine an atom’s chemical properties and bonding behavior
Valence electrons are involved in forming bonds with other atoms.
What is the Law of Conservation of Mass?
Mass is neither created nor destroyed in a chemical reaction
This principle is fundamental in balancing chemical equations.
Why is it important for chemical reactions to be balanced?
To obey the Law of Conservation of Mass
Balancing ensures that the number of atoms for each element is the same on both sides of the equation.
What are reactants & products?
- Reactants: Substances that undergo a chemical change
- Products: Substances formed as a result of a chemical reaction
Reactants are on the left side of the equation, and products are on the right.
What are Chemical Formulas and what do they represent?
They represent the composition of a substance using symbols and numbers
Chemical formulas indicate the types and numbers of atoms in a molecule.
What is the difference between Coefficients and Subscripts?
- Coefficients: Numbers in front of compounds indicating quantity
- Subscripts: Numbers in formulas indicating the number of atoms in a molecule
Coefficients apply to the entire compound, while subscripts apply only to the element they follow.
Can you accurately count the # of atoms in a chemical reaction?
Yes, by using the coefficients and subscripts in the chemical formulas
This is essential for balancing chemical equations.
What are the five main types of chemical reactions?
- Synthesis
- Decomposition
- Combustion
- Single replacement
- Double replacement
Each type has distinct characteristics and patterns.
Can you identify the type of Reaction based on the formula?
Yes, by analyzing the reactants and products involved
Different types of reactions follow specific patterns.
Double Displacement What is the format of the equation? Ions of two compounds switch places.
Format: AB + CD → AD + CB (or AC + BD)
Format:
AB + CD → AD + CB (or AC + BD)
combustion format
oxygen (O2) to carbon dioxide (CO2) and water (H2O)
