Name an element in the fourth period (row) of the periodic table with two 4p electrons.

Which of the following features is common to both acids and bases? A. ability to burn skin B. similar taste C. pH measurements greater than 7 Reset Submit

Classify each of the following as an element, a compound, or a mixture: (a) iron (b) oxygen (c) mercury oxide (d) pancake syrup (e) carbon dioxide (f) a substance composed of molecules each of which contains one hydrogen atom and one chlorine atom

How does Dr. Hoffmann's ultrasound device benefit society?

how many grams of solid lithium must be added to liquid after in order to obtain 15.0 L of hydrogen gas at STP?

Scientific notation of 2/10

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true

If an element has 1 valence electrons, how many dots will be in the elements dot diagram?

What is the temperature of a gas at STP?

What is the numerical meaning of centimeter

You run an experiment to test the effects of temperature on solubility. What would you heat? A.) solvent B.) solute C.) the room B.) the beaker