Stability of elements or compounds

Question

Question 1: Explain why some elements are stable on their own while others are more stable in compounds?

Question 2: Compare and contrast the properties of potassium (K) and iodine (I) with the compound KI.

Question 3: Identify what the electron dot diagram tells you about bonding.

Question 4: Explain why electric forces are essential to forming compounds.

Question 5: Describe why chemical bonding occurs. Give two examples of how bonds can form.

Question 6: Think critically: The label on a box of cleanser states that it contains CH₃COOH. What elements are in this compound? How many atoms of each element can be found in a unit of CH₃COOH?

Question 7: Use percentages: Given that the molecular mass magnesium hydrogen (Mg(OH)₂) is 58.32 amu and the atomic mass of an atom of oxygen is 15.999 amu, what percentage of this compound is oxygen?

Question 8: Compare and Contrast ionic and covalent bonds.

Question 9: Determine the types of bonding in CaO and in SO₂.

Question 10: Name the type of particle formed by covalent bonding.

Question 11: Identify the following compounds as polar covalent or nonpolar covalent: HBr, CI₂ and H₂O.