Which two types of rock could form after other rock melts into liquid magma a. sedimentary
b. metamorphic
c. extrusive igneous
d. intrusive igneous

The p sub shell can hold up to 8 electrons in an atom. true or false?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

The most common form of matter in the universe