Explanation

• In the periodic table, a rows is considered to be a periods.
• Periods are the horizontal rows of elements in the periodic table.

Explanation

The percentage yield is the most common measure of efficiency in chemical reactions, comparing actual yield to theoretical yield.

Explanation

Spectroscopy is the study of the interaction between light (electromagnetic radiation) and matter.

This interaction can occur with atoms, molecules, or ions in any state (solid, liquid, gas, or plasma).

Explanation

The value of Kc (equilibrium constant) increases when the concentration of the product increases.

This is because Kc is a measure of the ratio of products to reactants at equilibrium.

A higher product concentration means a greater tendency for the reaction to proceed in the forward direction.

Explanation

Dynamic equilibrium is a state where the rates of forward and reverse reactions are equal, and the concentrations of reactants and products remain constant.

However, this equilibrium can be disturbed by external stresses such as:

• Changes in concentration
• Changes in temperature
• Changes in pressure
• Adding or removing reactants or products

Explanation

• In a suspension, the particle size is typically larger than 10 nm (nanometers) in diameter.
• Suspensions are heterogeneous mixtures where the particles of the solute (solid, liquid, or gas) are dispersed in a solvent (liquid, gas, or solid) and are visible to the naked eye or under a microscope.

Explanation

• An example of a true solution is Ink in water.
• In a true solution, the solute particles are completely dissolved and cannot be seen or separated by filtration, which is characteristic of ink dissolved in water.

Explanation

• The initial temperature of a liquid does not affect its boiling point.
• The boiling point is the temperature at which a liquid changes state to a gas at a given pressure.
• It is a physical property of the substance itself.

Explanation

• A covalent bond is a chemical bond formed by the mutual sharing of electrons between two atoms.
• This type of bond typically occurs between nonmetal atoms, such as in molecules and organic compounds.

Explanation

• Lone pairs are electron pairs that are not shared by atoms in a covalent bond.
• They are pairs of electrons that are localized on a single atom and are not involved in bonding.
• Lone pairs are also known as non-bonding pairs or free pairs.