What is the element Ar classified as in the periodic table? a noble gas
a halogen
a metalloid
a metal

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

List four observations that indicate that a chemical reaction may be taking place

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution