click below
click below
Normal Size Small Size show me how
Atoms and compounds
Chapter 6.1
Term | Definition |
---|---|
Atom | Building blocks of matter |
Nucleus | Center of the atom |
Proton | Positively charged particles |
Neutron | Particles that have no charge |
Electron | Negatively charged particles located outside of the nucleus |
Isotope | Atoms of the same element that have different number of neutrons |
Compound | A pure substance formed when two or more different elements combine |
Covalent bond | A chemical bond that forms when electrons are shared |
Molecule | A compound in which the atoms are held together by covalent bonds |
Ion | An atom that has lost of gained one or more electrons |
Ionic Bond | An electrical attraction between two oppositely charged atoms or groups of atoms called ions |
Van Der Waals Force | Attractions between molecules |
Element | A pure substance that can not be broken down into other substances by physical or chemical means |