Why does gold sink and wood float when they have similar volumes?

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =