The planets and the sun form the solar system. The sun is an enormous star. The planets move around the sun. Mercury,Venus,earth, and Mars are the four small rocky planets. Jupiter, Saturn, Uranus, and Neptune are the four giant gas planets
Solution :
An 
reaction is a type of 
in organic chemistry where the enol or an enolate ion reacts with the carbonyl compound and forms a 
-hydroxyaldehyde or a -hydroxyketone, and then followed by a dehydration to give conjugated enone.
Benzaldehyde reacts with methylketone and forms two products:
Heat can be absorbed or produced
Most transition metal form more than one cation but aluminum forms the Al3+ cation only.
Yep that is true. These are rxns that change the nucleus
