ACS GEN CHEM 1 Final Review |100% Correct| Study Set

ACS GEN CHEM 1 Final Review |100% Correct| Study Set the physical material of the universe. It is anything that has mass and occupies space. *Ans* Matter is made up of relatively few elements. *Ans* Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). *Ans* Atom Each _______ is made of the same kind of atom *Ans* Element Combination of atoms held together in specific shapes *Ans* Molecule No fixed volume or shape, conforms to volume and shape of container, is compressible *Ans* Gas Individual particles are confined to a given volume, liquid flows (no definite shape) and assumes the shape of its container up to the volume of the liquid, slightly compressible *Ans* Liquid Rigid with definite shape, very slightly compressible *Ans* Solid these stable diatomics *Ans* H2,O2, N2, and the Halogens (F2, Cl2, Br2, I2) Different samples of any pure compound contain the same elements in the same proportion by mass *Ans* Law of Constant (Definite) Composition characteristics of a substance. Can be observed without changing a substance into another substance *Ans* Physical Properties Describes the reactivity of a substance. Can only be observed when a substance is changed into another substance *Ans* Chemical properties: Does not depend on amount. *Ans* Intensive property : Depends on amount. *Ans* Extensive property Substances transform into chemically different substances *Ans* Chemical change No change in chemical composition *Ans* Physical change How close to the true value a given measurement is. *Ans* Accuracy