To achieve a complete set of valence electrons, atoms must fulfill the octet rule. What must atoms do to obey this rule?

How do I answer questions which asks - What type of bonding do substances that are solid/liquid/gas at room temperature have?

Each of the compounds that you tests contained chlorine, which is a poisonous gas. Why was this test safe to perform (it was, or your lungs would have turned to mush) without a gas mask?

Silver has a density of 10.5 g cm3 and gold has a density of 19.3 g/cm3. which would have the greater mass, 5cm^3 of silver or 5cm^3 of gold?

In term of molecules explain what happen to a sugar cube when it is placed into a beaker of water

Why are group 5A element have different oxidation state from - 3 to + 5

For each example of a phase change, identify whether heat is absorbed from the surroundings or released into the surroundings. A popsicle melts on a hot day. Rubbing alcohol evaporates from the surface of the skin.

How are scientific questions answered?

How much heat is required to increase the temperature of 100.0 grams of iron from 15.0oC to 40.2oC? (The specific heat of iron is 0.46 J/g xoC).

An adhesive dealer receives an order for 3000 lb of an adhesive solution containing 13% polymer by weight. On hand are 500 lb of 10% solution and very large quantities of 20% solution and pure solvent.

How to convert moles 3.612 x 10^23 atoms Fe