Is crushing a rock a chemical or physical change?

Which process results in a chemical change? A) Tearing tin foil B) melting an iron bar C) crushing an aluminum can D) burning magnesium ribbon

The chemical symbol for sodium is

Which increases the amount of carbon dioxide in the atmosphere, acting as a carbon source?

The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. The more positive the reduction potential, the more easily the substance gains electrons.

The only positive ion found in H2SO4 (aq) is the (1) ammonium ion (3) hydroxide ion (2) hydronium ion (4) sulfate ion

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?