Secondary 4 Quiz ChemBond

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

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

How many single bonds will carbon look to make when it bonds covalently?

• 2

• 3

• 4

• 5

Which of the following elements does NOT form an ion with a charge of 2+?

• Beryllium

• Strontium

• Magnesium

• fluorine

When Alkali metals (Group 1) form ions, they ____.

• lose 1 proton

• gain 1 proton

• lose 1 electron

• gain 1 electron

How does fluorine (F) obey the octet rule when reacting to form compounds?

• It doesn’t change its number of electrons

• Fluorine does not obey the octet rule.

• It gains electrons.

• It gives up electrons.

Which of the following pairs of elements is most likely to form an ionic compound?

• magnesium and fluorine

• manganese and iron

• oxygen and chlorine

• sodium and aluminum