An unknown material is left standing and separates into layers. the substance is a a. solution b. suspension c. compound d. colloid

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic