Chapter 6 Test

Match the following

• describes a molecule in which the positive and negative charges are separated

• non-polar bond

• a covalent bond in which the bonding electrons are equally attracted to both bonded atoms

• covalent bonding

• a bond formed when atoms share one or more pairs of electrons

• polar

• the attractive force that holds atoms or ions together

• chemical bond

• a force that attracts electrons from one atom to another, transforms a neutral atom into an ion

• ionic bonding

Match the following

• a group of atoms that are held together by chemical forces

• bond energy

• a combination chemical symbols and numbers to represent a substance

• structural formula

• indicates the location of the atoms, groups, or ions and bonds

• chemical formula

• energy required to break the bonds in 1 mol of a chemical compound

• molecule

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.

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.

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

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

• molecule
• ion
• isotope
• element