AVC- F24-LECTURE FINAL

Front

What happens to the volume and molarity of a solution when it is diluted?

Back

The volume increases and the molarity (M) decreases.

Front

What is a properly balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, ensuring mass conservation.

Front

What is the electron configuration for sulfur (S)?

Back

[Ne] 3s² 3p⁴

Front

How do you identify a limiting reactant in a chemical reaction?

Back

The limiting reactant is the one that is completely used up first, preventing further reaction.

Front

Which molecule has the largest bond angle: NH₃, H₂O, CO₂, CH₄, or Cl₂?

Back

CO₂ has the largest bond angle.

Front

Define molarity (M).

Back

Molarity is the number of moles of solute per liter of solution.

Front

What is the significance of a balanced chemical equation?

Back

It shows the conservation of mass and allows for stoichiometric calculations.

Front

What is the noble gas shortcut for electron configuration?

Back

It uses the electron configuration of the nearest noble gas to simplify the representation of electron arrangements.

Front

Explain the concept of excess reactants in a chemical reaction.

Back

Excess reactants are those that remain after the limiting reactant is completely consumed.

Front

What is the bond angle in methane (CH₄)?

Back

The bond angle in methane (CH₄) is approximately 109.5 degrees.