"A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds."
A substance composed of two or more elements that are chemically combined.
Chemical bonding: The study of how atoms are held together in molecules or compounds.
Ionic compounds: Compounds formed by the transfer of electrons between atoms.
Covalent compounds: Compounds formed by the sharing of electrons between atoms.
Molecular structure: The arrangement of atoms within a molecule and the effect of this arrangement on the properties of the compound.
Chemical reactions: The interactions between compounds that result in the formation of new compounds.
Stoichiometry: The study of the quantitative relationships between reactants and products in a chemical reaction.
Gas laws: The laws that govern the behavior of gases, including Boyle's Law, Charles's Law, and the Ideal Gas Law.
Solutions: The study of solutions, including factors that affect solubility, concentration, and colligative properties.
Acids and bases: The study of acids, which donate protons, and bases, which accept protons, and the reactions that occur when acids and bases are mixed.
Organic chemistry: The study of carbon-based compounds, including hydrocarbons, alcohols, and carboxylic acids, and the reactions that occur within these compounds.
Organic Compounds: These are compounds that contain carbon atoms bonded to other atoms like hydrogen, oxygen, nitrogen, and other elements. They include carbohydrates, lipids, proteins, nucleic acids, and others.
Inorganic Compounds: These are compounds that are not based on carbon atoms. They include metals, non-metals, salts, and minerals.
Covalent Compounds: These are compounds that are formed by sharing electrons between atoms. They are usually formed between non-metals.
Ionic Compounds: These are compounds that are formed by the transfer of electrons between atoms. They are usually formed between metals and non-metals.
Polymers: These are long-chain molecules that are made up of repeating units. They include plastics, rubber, and other synthetic materials.
Biological Compounds: These are compounds that are found within living organisms. They include amino acids, enzymes, hormones, and other biomolecules.
Composite Materials: These are materials that are made up of two or more different types of compounds. They are used for a wide range of applications, from construction to electronics to aerospace.
Energy Compounds: These are compounds that are used to store or release energy. They include fuels, batteries, and other types of energy storage devices.
Natural Compounds: These are compounds that are found in nature. They include organic and inorganic compounds such as minerals, rocks, and gases.
Synthetic Compounds: These are compounds that are artificially created in laboratories. They include drugs, pesticides, and other chemicals.
"A molecule consisting of atoms of only one element is therefore not a compound."
"A compound can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances."
"In this process, bonds between atoms may be broken and/or new bonds formed."
"Molecular compounds are held together by covalent bonds."
"Ionic compounds are held together by ionic bonds."
"Intermetallic compounds are held together by metallic bonds."
"Coordination complexes are held together by coordinate covalent bonds."
"Non-stoichiometric compounds form a disputed marginal case."
"A chemical formula specifies the number of atoms of each element in a compound molecule, using the standard chemical symbols with numerical subscripts."
"Many chemical compounds have a unique CAS number identifier assigned by the Chemical Abstracts Service."
"Globally, more than 350,000 chemical compounds (including mixtures of chemicals) have been registered for production and use."
"[Chemical bonds in compounds] hold together the constituent atoms."
"[The four major types of compounds are] molecular compounds, ionic compounds, intermetallic compounds, and coordination complexes."
"[They are distinguished] by how the constituent atoms are bonded together."
"Molecular compounds are held together by covalent bonds, while ionic compounds are held together by ionic bonds."
"The Chemical Abstracts Service assigns a unique CAS number identifier to many chemical compounds."
"More than 350,000 chemical compounds (including mixtures of chemicals) have been registered for production and use."
"No, a molecule consisting of atoms of only one element is not considered a compound."
"Yes, in a chemical reaction bonds between atoms may be broken and/or new bonds formed."