Empirical and Molecular Formulas

What is Percent Composition?

• The total mass of a chemical compound.

• The percentage by mass of each element present within a chemical compound, indicating its elemental makeup.

• The ratio of the mass of a solute to the mass of a solution.

• The measurement of the volume of a gas in a chemical reaction.

What is Volumetric Analysis?

• A method for measuring the mass of a substance

• A quantitative chemical analysis method involving the measurement of the volume of a solution of known concentration.

• A technique for determining the temperature of a solution

• A process for separating mixtures based on their boiling points.

Gravimetric Analysis

• A qualitative analysis method involving color change

• A quantitative chemical analysis method involving the measurement of the mass of a substance

• A method for determining the boiling point of a substance

• A technique for measuring the pH of a solution

What is Empirical Evidence?

• Information and data acquired through observation or experimentation, which serves as the basis for scientific knowledge.

• A theory that explains phenomena without the need for data.

• A collection of opinions and beliefs about a subject.

• Data that is purely theoretical and not based on real-world observations.

What is a Synthetic Chemist?

• A chemist who specializes in the creation of new chemical compounds through planned chemical reactions and processes.

• A chemist who analyzes existing chemical compounds for their properties.

• A chemist who focuses on the environmental impact of chemical processes.

• A chemist who works exclusively with natural substances.

What is an Analytical Chemist?

• A chemist who analyzes substances to determine their composition, structure, and the quantity of each component.

• A chemist who focuses on the synthesis of new compounds.

• A chemist who studies the physical properties of materials.

• A chemist who specializes in the production of pharmaceuticals.

What is a Formula Unit?

• The simplest whole-number ratio of cations to anions in an ionic compound's crystal lattice structure.

• A type of molecular compound that contains only one type of ion.

• The total number of atoms in a molecule of a compound.

• A measurement of the mass of a single ion.

What is a Hydrocarbon?

• An organic chemical compound composed exclusively of hydrogen and carbon atoms.

• A compound that contains oxygen and nitrogen atoms.

• A type of mineral found in rocks.

• A synthetic polymer made from petroleum.

What is a Molecular Formula?

• A chemical formula that specifies the actual number of atoms of each element in one molecule of a substance.

• A formula that represents the ratio of elements in a compound.

• A simplified representation of a chemical compound.

• A formula that only shows the types of atoms present in a molecule.

What is the definition of an Empirical Formula?

• A chemical formula showing the simplest whole-number ratio of moles of the elements present in a compound.

• A formula that represents the actual number of atoms in a molecule.

• A formula that indicates the arrangement of atoms in a molecule.

• A formula that shows the total number of electrons in a compound.