This is a question in Seneca, plz help asap bc I can't skip it!! What do we call a pure sample that's run next to the tested substance to see if it's a component in the mixture?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Which diagram represents the phase tha occurs after a solid melts?

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .