Can a physical change, change what a substance is

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

Match these items with their examples. 1. liquid solution milk 2. solid solution aluminum foil 3. compound soda 4. colloid steel 5. element salt