yes
yes
Yes.
Not in their standard solid states, but they can if molten or dissolved in water.
All do - some just have greater conductivity than others
Lemon juice can conduct electricity.
yes all materials conduct electicity , but some are good conductor , some poor and some very poor
if lemon juice is diluted with water i.e. by electrolysis
No, but some types of iron-ore have a permanent magnetic field.
No, argon is a non-metal noble gas that does not conduct electricity because it has a full outer electron shell and lacks free electrons for carrying electric charge.
the majoriy of metals are good conductors such as cooper and iron other metals such as gold are not
Iron fillings will be corroded.
When you mix iron filings with lemon juice, the acid in the lemon juice will react with the iron to produce iron oxides and hydrogen gas. The iron filings will begin to rust as the iron oxides are formed. This reaction is an example of a chemical reaction between an acid and a metal.