Chemical Bonding

Which of the following best describes covalent bonding?

• Transfer of electrons between atoms

• Sharing of electrons between atoms

• Attraction between oppositely charged ions

• Formation of a metallic lattice structure

Why do noble gases under normal conditions not form chemical bonds? 

• They all have 2 valence electrons and don't have to
• their outer energy level/orbit is empty 
• their outer orbit is full of valence electrons
• they all have 8 neutrons

How many electrons are needed to fill the outer orbit of most atoms?

• 2
• 4
• 6
• 8

In a covalent bond, one or more electrons are? 

• shared 
• lost 
• gained 
• transferred 

The joining of atoms to form new substances is called? 

• proton bonding 
• mixtures
• compounds 
• chemical bonding 

The atomic number of an element tells you what about that element? 

• number of ions
• number of valence electrons
• number of electrons 
• what is an element? 

When an element loses or gains an electron, it is called a?

• atoms 
• ion
• molecule 
• compound 

This type of model shows only the valence electrons of an element? 

• Bohr diagram 
• Childers model
• Lewis-dot diagram 
• What is a valence electron again?

Which type of element has few valence electrons (1 or 2) and is eager to lose them? 

• metals
• nonmetals 
• metalloids
• noble gases 

What molecule is this?

• CO
• CO2
• C2O
• C2O2