Kategoriak: All - functional - attraction - molecules - forces

arabera DALLAS HAVENS (Student) 3 years ago

222

Molecules

Various molecular interactions are central to chemical structures and reactions. These interactions can be broadly classified into intramolecular and intermolecular forces. Intramolecular forces include ionic bonds, where electrons are transferred between metals and non-metals, resulting in oppositely charged ions.

Molecules

Molecules

Intramolecular forces of attraction

Ionic bonds Where a metal and one or more non metals attract by stealing each others electrons, therefor one is negatively charged and the other is positively charged.
Covalent bonds Where two or more non metals attract and share electrons.

Polarity

Nonpolar
Molecule/part of a molecule that shares electrons equally
Polar
Molecule/part of a molecule that shares electrons unequally

Intermolecular forces of attraction

Ionic-dipole Electrons are unequally shared, making the functional group either positive or negative. The oppositely charges functional groups attract.
dipole-dipole The electrons in a covalent bond are shared unequally causing a partial negative charge to occur at one end of the functional group and a partially positive charge on the other end. This causes two of these molecules to attract.
Dispersion Is caused by electrons becoming unevenly distributed around an atom, causing its charge be on one side of it. This causes it to repel the electrons in another molecule, therefor attraction occurs
Hydrogen bonds Bonds where hydrogen shares electrons with another atom and becomes negatively charged, and the other atom becomes positively charged. This allows it to connect with other hydrogen bonded molecules. Ex. H2O

Functional Groups (A group of atoms that makes up certain properties of a molecule)

Sulfhydyrl Found in the amino acid cystine, therefore also in most amino acids
Phosphate Found in nucleic acids (DNA, RNA), ATP, ADP, and phospholipids
Amine Found in amino acids, proteins and other N- containing compounds
Carboxyl Found in organic acids such as amino acids and fatty acids
Ketone Found in Keto- type sugars
Aldehyde found in Aldo- type sugars
Hydroxyl Found in Carbohydrates another cellular compounds