Intro to Metals

Select the correct option.

• Metals have 4-8 valence electrons

• Metals have 1-3 valence electrons

Which of the following is the chemical representation for an atom of oxygen?

• O

• O2

• O3

• O=O

Which of the following is the chemical formula for a molecule of oxygen?

• O

• O-O

• O2

• O3

Metals react with oxygen to form

• CO2 + water

• salt + hydrogen

• metal oxide

• metal hydroxide

Metals react with water to form

• metal oxide

• metal oxide + hydrogen gas

• salt + hydrogen gas

• metal hydroxide + hydrogen gas

Metals react with steam to form

• metal oxide

• metal oxide + hydrogen gas

• metal hydroxide + hydrogen gas

• salt + hydrogen gas

Reactive metals react with acids to form

• metal oxide

• metal oxide + hydrogen gas

• metal hydroxide + hydrogen gas

• salt + hydrogen gas

Which of the following BEST accounts for the electrical property of metals?

• High density of metals

• Presence of mobile electrons

• Strong electrostatic force of attraction

• Metallic bonding present

All metals are solid at room temperature EXCEPT

• cadmium

• beryllium

• manganese

• mercury

Mg + 2HCl ->

• MgCl2 + H2

• 2MgHCl

• MgH2 + 2Cl

• MgCl + 2H