Chemistry Regents Study Guide

Matter

Substance or mixture; cannot be created or destroyed

Gas, Liquid, Solid

States of matter: gas, liquid, solid

Safety in the lab

Practicing safety measures in a laboratory setting

Conservation of Matter

Matter cannot be created or destroyed, only changed

Chemical property

Property that describes how a substance reacts

Ideal gas

Hypothetical gas with no intermolecular forces

Entropy

Measure of disorder in a system

Avogadro's Hypothesis

Equal volumes of gases at the same conditions contain the same number of particles

Vapor Pressure

Pressure exerted by a vapor in equilibrium with its liquid phase

Temperature

Degree of hotness or coldness

Heat flow

Transfer of thermal energy

Melting point

Temperature at which a solid turns to a liquid

Sublimation

Solid to gas transition without passing through liquid phase

Orbital

Region where an electron is likely to be found

Nucleus and nuclear charge

Center of an atom containing protons and neutrons

Sub-atomic particle charge

Charge of particles like protons, electrons, and neutrons

Sub-atomic particle mass

Mass of particles like protons, electrons, and neutrons

Isotopes

Atoms with the same number of protons but different neutrons

Distillation

Separation technique based on boiling point differences

Allotropes

Different forms of the same element in the same phase

Kinetic Molecular Theory

Theory explaining behavior of gases based on motion