chemical property

Examples of chemical property in the following topics:

• Physical and Chemical Properties of Matter

  • A chemical property, meanwhile, is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
  • Chemical properties cannot be determined just by viewing or touching the substance; the substance's internal structure must be affected for its chemical properties to be investigated.
  • Physical properties are properties that can be measured or observed without changing the chemical nature of the substance.
  • Remember, the definition of a chemical property is that measuring that property must lead to a change in the substance's chemical structure.
  • Here are several examples of chemical properties:

• Functional Groups

  • Functional groups refer to specific atoms bonded in a certain arrangement that give a compound certain physical and chemical properties.
  • Often, compounds are functionalized with specific groups for a specific chemical reaction.
  • Functionalization refers to the addition of functional groups to a compound by chemical synthesis.
  • In materials science, functionalization is employed to achieve desired surface properties; functional groups can also be used to covalently link functional molecules to the surfaces of chemical devices.
  • It is important to be able to recognize the functional groups and the physical and chemical properties that they afford compounds.

• The Periodic Table

  • A periodic table is the arrangement of chemical elements according to their electron configurations and recurring chemical properties.
  • A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties.
  • Since, by definition, a periodic table incorporates recurring trends, any such table can be used to derive relationships between the properties of the elements and predict the properties of new elements that are yet to be discovered or synthesized.
  • He developed his table to illustrate periodic trends in the properties of the elements known at the time.
  • Mendeleev also predicted some properties of then-unknown elements that were expected to fill gaps in the table.

• The Periodic Table of Elements

  • A periodic table is a tabular display of elements organized by their atomic numbers, electron configurations, and chemical properties.
  • The periodic table is a tabular display of the chemical elements.
  • The elements are organized based on their atomic numbers, electron configurations, and recurring chemical properties.
  • As a result, the periodic table provides a useful framework for analyzing chemical behavior, and such tables are widely used in chemistry and other sciences.
  • Explain how properties of elements vary within groups and across periods in the periodic table

• Physical and Chemical Changes to Matter

  • There are two types of change in matter: physical change and chemical change.
  • As the names suggest, a physical change affects a substance's physical properties, and a chemical change affects its chemical properties.
  • Many physical changes are reversible (such as heating and cooling), whereas chemical changes are often irreversible or only reversible with an additional chemical change.
  • Chemical changes are also known as chemical reactions.
  • Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds.

• The Study of Chemistry

  • Chemistry is the study of the composition, structure, properties, and transformation of matter.
  • Chemistry is the study of matter and the chemical reactions between substances.
  • Chemistry is also the study of matter's composition, structure, and properties.
  • Physical chemistry is the study of the physical properties of chemicals.
  • Chemistry is the study of the properties, composition, and transformation of matter.

• Molecules

  • Molecules are electrically neutral compounds made of multiple atoms bound together by chemical bonds.
  • When two or more atoms are held together by a chemical covalent bond, this new entity is known as a molecule.
  • Molecules are neutral and carry no charge; this property distinguishes them from polyatomic ions, such as nitrate (NO3-).
  • Because of these different arrangements, isomers often have very different chemical and physical properties.
  • The chemical formula for propanol (C3H7OH) describes several different molecules, which vary by the position of the alcohol (OH).

• Substances and Mixtures

  • In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties.
  • A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded.
  • A common example of a chemical substance is pure water; it always has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory.
  • In practical terms, if the property of interest is the same regardless of how much of the mixture is taken, the mixture is homogeneous.
  • A mixture's physical properties, such as its melting point, may differ from those of its individual components.

• Writing Chemical Equations

  • A chemical equation expresses a chemical reaction by showing how certain reactants yield certain products.
  • A chemical equation is the symbolic representation of a chemical reaction.
  • A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right).
  • For equations involving complex chemicals, read the chemical formulas using IUPAC nomenclature, rather than reading the letter and its subscript.
  • Also, please note that, as in the mathematical commutative property of addition, chemical equations are commutative.

• Atomic Theory of Matter

  • Dalton proposed that each chemical element is composed of atoms of a single, unique type, and though they cannot be altered or destroyed by chemical means, they can combine to form more complex structures (chemical compounds).
  • Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties.
  • Atoms of different elements combine in simple whole-number ratios to form chemical compounds.
  • Atoms can be broken down into smaller pieces, and atoms of a given element can vary in mass and other properties (see isotopes and ions).
  • Various atoms and molecules as depicted in John Dalton's A New System of Chemical Philosophy (1808).