All minerals are compounds of various elements.
举一反三
- Compounds composed of molecules (molecular compounds) usually contain only elements.
- ( ) are organic compounds that are chemically based on carbon, hydrogen and other nonmetallic elements.
- Promotion is comprised of various elements like ______.
- Cultural elements fall into four groups: perception, verbal processes, nonverbal processes and contextual elements.
- ¡All the components on the wafer are called integrated elements.