Which is more dense a pound of rice or cement

What makes metalloids a group of their own?

Which statement correctly compares a law and a theory

The element lanthanum has two stable isotopes, lanthanum-138 with an atomic mass of 137.9 AMU and lanthanum-139 with an atomic mass of 138.9 AMU. From the atomic weight of La = 138.9, one can conclude that: A.

What is the difference between ionic compund and covalent compound

Which class of compounds contains only carbon, hydrogen, and nitrogen?

A metal block has a mass of 122 grams and measures 2cm x 2cm x 4cm. What is the density of the block?

What are valency and radicals

Tell me some bad effects of Ethanol

How many moles of carbon dioxide are released daily by a humming birds respiration?

If a scientist creates a new rock-like substance in a laboratory, why wouldn't this type of material be classified as a true mineral?