The minimum amount of energy that reactants must have to start a chemical reaction is called

A beaker contains a solution of calcium hydroxide (Ca (OH) 2) in water. A student places a straw in the beaker and then breathes into the solution through the straw. As the student breathes into the solution, a white precipitate forms.

Enter a complete ionic equation to show the reaction of aqueous Pb (NO3) 2Pb (NO3) 2 with aqueous sodium sulfate to form solid PbSO4 PbSO4 and aqueous sodium nitrate.

Why does coke explode when opened

Rubbing alcohol evaporates from your hand quickly, leaving a cooling effect on your skin. Because evaporation is an example of a physical property, how do the molecules of gas compare to the molecules as a liquid?

What controls which substances can move into and out of a cell?

How does the number of molecules in one mole of carbon dioxide compare with the number of molecules in one mole of water? A. There are four times as many molecules in one mole of carbon dioxide as there are in one mole of water. B.

Suppose you had 1.0 mol samples the following gases at STP. If the volume of each of the samples of gas was reduced to one tenth of its original size and the temperature remained the same, which gas would have the lowest pressure?

What happens when the silvered coin is put on the flame

Do simple molecules conduct electricity? and why?

C) 2,2-dimethyl-3-heptyne how to draw