List the two main kinds of changes that you can observe when chemical reactions occur.

Why does light that passes through our windows at home not display the beautiful colors

In a reduction half-reaction, which amount is shown? O A. the number of atoms needed to balance the equation OB. the number of electrons an element gains O c. the number of electrons an element loses OD.

Which is most likely a solid at room temperature? a. chlorine b. hydrogen c. neon eliminate d. potassium?

How many grams of O are in 585 g of Li2O

How do you prepare 500 ml of a 1.77M H2SO4 solution from an 18.0 M H2SO4 stock solution?

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?