Replacement c. Combustion d. State and Phase Changes a. Melting Points of Solids b. Vaporization of Liquids e. Gases 10. Boyle's Law d. This stellar cloud column, made up of hydrogen gas and dust, is the birthplace for new stars.
Man is slightly nearer to the atom than the stars.
From his central position he can survey the grandest works of Nature with the astronomer, or the minutest works with the chemist. Perhaps we take chemistry for granted because nature makes everything look so easy. Every day, exploding stars eject new elements into the vastness of space. Extreme temperature and pressure create precious gemstones deep in Earth's belly. And on its surface, green plants transform carbon dioxide and sunlight into food for a living planet.