20.0 g of Potassium reacts with water to produce Potassium hydroxide and hydrogen gas. 2 K + 2 H2O —> 2 KOH + H2
How many miles of hydrogen are there?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

An observation that requires measurement is called quantitative observable or qualitative

What will most likely happen when two bromine atoms bond together?