Answer:
the abbreviation form of full name is called symbol.
the smallest unit of cimpound is called molecule.
Answer:
d water I believe I'm sorry if it's wrot
Option C coz it should be ( CNH4)2. Hope i cleared your doubt
Answer:a As the name suggests, a permanent magnet is 'permanent'. ... An electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil.... hope these helps chu :/
Explanation:
