Chemical Bonding

Predict the bond that is formed between Phosophorus and Chlorine?

• Ionic

• Covalent

• Metallic

• H-bond

Which of the pair of elements form an ionic bond?

• Magnesium and Oxygen

• Magnesium and Sodium

• Iron and Zinc

• Nitrogen and Hydrogen

How many valence electrons are shown in the diagram?

• 16

• 7

• 6

• 2

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Which of these is NOT an alloy?

• bronze
• copper
• brass
• stainless steel

What is the basis of a metallic bond?

• the attraction of neutral metal atoms.
• the attraction between protons and neutrons.
• the attraction between positive metal ions and interlocking electrons.
• the attraction between positive metal ions and free floating electrons. (Sea of Electrons)

The ability of a material to be shaped in all directions without cracking or breaking.

• hardness
• ductility
• malleability
• conductivity

Examine the image: How many bonds are formed looking at the model of the compound? And also indetify what type of bond is formed.

• 2 bonds; covalent

• 4 bonds; metallic

• 2 bonds; ionic

• 4 bonds; covalent

Which of the following is true for ionic bonding & ionic compounds?

• They must be made of ions with like charges.

• The negative ion must be written first.

• Compounds must have an overall charge of zero.

• They are made of metals and nonmetals.

• The positive ion must be written first.

A charged particle that has gained or lost electrons is called a _____.

• molecule
• ion
• isotope
• element