Chemistry [Distinction] Questions and Answers 2023

Chemistry - -the branch of science that deals with the study of the composition, structure, and properties of matter and the changes which matter undergoes -physical chemistry - -the branch of chemistry which deals with applying the theories of physics to the study of reactions and properties of matter -organic chemistry - -the branch of chemistry which deals with studying carbon compounds -inorganic chemistry - -the branch of chemistry which deals with studying non-carbon compounds -biochemistry - -the branch of chemistry which deals with the study of living organisms -analytical chemistry - -the branch of chemistry which deals with identifying which substances are present in materials and how much of each is present -system of measurement - -collection of compatible, related units that can be used to measure quantities such as length, mass, or volume -metric system - -system of measurement based on units of ten, officially known as SI -meter - -metric unit of length -liter - -metric unit of volume -nano- - -metric prefix meaning "billionth" -micro- - -metric prefix meaning "millionth" -milli - -metric prefix meaning "thousandth" -centi- - -metric prefix meaning "hundredth" -kilo- - -metric prefix meaning "thousand" -mega- - -metric prefix meaning "million" -mass - -measure of the quantity of matter in an object -weight - -measure of the force of gravity upon an object -density - -mass per unit volume of a substance -Celsius - -a unit of measuring temperature in which the freezing point of water is 0 degrees and the boiling point of water is 100 degrees -absolute zero - -the lowest possible temperature; the temperature at which molecules cease to vibrate; -273.15 C -kelvin - -a unit of measuring temperature in which each unit kelvin is equal to one unit Celsius, but 0 K is the absolute zero -second - -metric unit of time