Metals, nonmetals and noble gases

All of these elements are metal solid elements except ...............

• sodium

• magnesium

• mercury

• aluminium

All of the following are metals except .............

• iron

• oxygen

• copper

• sodium

All of the following are properties of metals except .....................

• they are malleable and ductile.

• they are good conductors of electricity.

• they contain 1,2, or 3 electrons in the outermost shell.

• they are bad conductors of heat.

Oxygen is a form of ...........................

• acids

• bases

• metals

• nonmetals

When an atom of an element loses one electron or more, it changes into ....................

• negative ion

• positive ion

• neutral atom

• no correct answer

When an atom is changed into an ion, the ............. is changed.

• number of protons

• number of electrons

• number of neutrons

• mass number

A lithium atom (Li) changes into a lithium ion (Li⁺), which mean that it .........................

• gains one proton

• gains one electron

• loses one proton

• loses one electron

The only nonmetal that exists in a liquid state is ..................

• bromine

• chlorine

• hydrogen

• nitrogen

All of non metals don't conduct electricity except ...........

• bromine

• aluminium

• graphite

• mercury

In the negative ion, the number of protons is .................. the number of electrons.

• less than

• more than

• equal to

• no correct answer