AP Chemistry Thou Shall Not Forget- Part 2

Front

What type of bond forms between hydrogen and chlorine?

Back

Polar covalent bond is formed between hydrogen and chlorine due to the difference in electronegativity, resulting in a partial positive charge on hydrogen and a partial negative charge on chlorine.

Front

What two substances are produced in combustion reactions?

Back

Combustion reactions produce water vapor (H2O) and carbon dioxide (CO2) as the main products.

Front

What type of reaction is represented by the equation: 3O2 + 2FeCl3 --> 2Fe2O3 + 3Cl2?

Back

This is a Single Displacement reaction where one element displaces another in a compound.

Front

What is the rate law for the reaction with the slow elementary step A --> B + C?

Back

The rate law is rate = k[A], indicating that the rate of the reaction depends on the concentration of reactant A.

Front

True or False: The particles under the purple curve (middle) all have a temperature of 500K.

Back

False. The particles under the curve can have a range of temperatures, not all at 500K.

Front

Define a polar covalent bond.

Back

A polar covalent bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms, leading to a dipole moment.

Front

What is the general formula for combustion reactions?

Back

The general formula for combustion reactions is: Hydrocarbon + O2 --> CO2 + H2O.

Front

What is a single displacement reaction?

Back

A single displacement reaction is a chemical reaction where one element replaces another element in a compound.

Front

What is the significance of the rate constant (k) in a rate law?

Back

The rate constant (k) is a proportionality factor that relates the rate of a reaction to the concentrations of the reactants.

Front

Explain the concept of activation energy.

Back

Activation energy is the minimum energy required for a chemical reaction to occur, allowing reactants to reach the transition state.