Unit 1: Chemistry of Life Vocab

smallest particle of an element

• atom
• molecule
• electron
• proton
• neutron

chemical bond in which atoms share electrons

• covalent bond
• ionic bond
• hydrogen bond

negatively charged subatomic particle that occupies levels surrounding the nucleus of an atom

• electron
• proton
• neutron

the ability of an atom to attract electrons toward itself in a chemical bond

• electronegativity
• polarity
• covalence
• positivity

substance with distinct properties that cannot be broken down further

• element
• atom
• particle
• molecule
• neutron

charged particle

• ion
• element
• polar molecule
• neutron

chemical bond in which oppositely charged ions are attracted to one another

• ionic bond
• covalent bond
• hydrogen bond
• peptide bond

two or more atoms linked by covalent bonds

• molecule
• atom
• element
• particle

H+ ion; also the positively subatomic particle

• proton
• element
• electron
• neutron

chemical that donates H+ to a solution, lowering the pH

• acid
• base
• buffer