SCI 1101 Lecture 2: Chapter 2 Notes
Document Summary
Matter, chemistry, and the environment: matter is defined as any material that has mass and occupies space, chemistry studies the interaction of matter. Law of conservation of matter: states that matter can be transformed from one type of substance to another, but not created or destroyed, matter in ecosystems constantly cycles, undesirable matter, like nuclear waste and pollution can"t be destroyed. Isotopes have special notations indicating their atomic mass: some isotopes are radioactive, meaning they decay and change their identity by emitting subatomic particles and high-energy radiation. In some covalent bonds such as water, one part of the molecule attracts electrons more strongly, creating oppositely charged poles: the charged ends of water molecules attract each other, forming a weak interaction called hydrogen bonds. Water"s chemistry facilitates life: water has many unique properties that make life possible: It is the universal solvent because it can bond and dissolve other charged molecules.
