Why is a Roman numeral needed for iron compounds but not for compounds containing magnesium?

What group of elements easily gains one valence electron

What type of energy is present in lightning? A.) Electrical energy B.) Chemical energy C.) Nuclear energy D.) Potential energy

Which student is determining the atomic mass of sodium?

Determine the number of atoms in 1.75 ml of mercury. (the density of mercury is 13.5 g/ml.)

Net ionic equations for potassium sulfate plus calcium phosphate yields

How do bacteria get their food? Select all that apply. manufacture it themselves obtain it from decaying organic matter obtain it parasitically from living organisms obtain it from the soil and atmosphere

A test done under standard conditions is referred to as what in chemistry? A. STP B. Control C. Rate Constant D. Kinetics E. None of the above

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. what is the volume in liters of 3.46 kg of ethylene glycol?

Which type of matter are made of atoms? a. solids only b. solids and liquids only c. plasma only d. solids, liquids, gases and plasma

Read the excerpt from a science text. In our experiment, we filled two identical glasses with water. To one glass, we added two tablespoons of salt and stirred. To the other glass, we added four drops of food coloring and stirred.