AP Chem Topics 3.7 - 3.13

Front

What is a chromatogram?

Back

A chromatogram is a visual representation of the separation of components in a mixture, typically used in chromatography to identify and quantify substances.

Front

What does it mean to dilute a solution?

Back

Diluting a solution means reducing its concentration by adding more solvent, which increases the total volume of the solution.

Front

What is the formula for dilution?

Back

The formula for dilution is C1V1 = C2V2, where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the concentration and volume of the diluted solution.

Front

What are the electromagnetic spectrum regions in order of increasing frequency?

Back

The regions are: Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays.

Front

What is the Lewis structure?

Back

The Lewis structure is a diagram that shows the bonding between atoms in a molecule and the lone pairs of electrons that may exist.

Front

What is distillation?

Back

Distillation is a separation process that involves heating a liquid to create vapor and then cooling the vapor to create a liquid, effectively separating components based on differences in boiling points.

Front

What is the purpose of chromatography?

Back

The purpose of chromatography is to separate and analyze mixtures of substances to identify their components.

Front

What is the difference between soluble and insoluble solids?

Back

Soluble solids can dissolve in a solvent to form a solution, while insoluble solids do not dissolve and remain as a separate phase.

Front

What is the significance of the calcium ion in chemical reactions?

Back

The calcium ion (Ca²⁺) is important in various biological and chemical processes, including muscle contraction and neurotransmitter release.

Front

What is the relationship between frequency and energy of electromagnetic waves?

Back

The energy of electromagnetic waves is directly proportional to their frequency; higher frequency waves carry more energy.