Test Bank for Chemistry: The Molecular Nature of Matter, 8th Edition by Jespersen

Test Bank for Chemistry: The Molecular Nature of Matter, 8th Edition by Jespersen accuracy - The closeness of a measurement to the actual value base unit (fundamental) - An unit that defines the standard for one of the seven physical quantities in the SI calibration - The process of correcting for systematic error of a measuring device by comparing it to a known standard. Celsius Scale - A temperature scale in which the freezing and boiling points of water are defined as 0°C and 100°C, respectively. chemical change (chemical reaction) - Occurs when a substance (or substances) is converted into a different substance (or substances) chemical property - Characteristics a substance shows as it changes into or interacts with another substance (or substances) chemistry - the study of matter and its properties, the changes that matter undergoes and the energy associated with those changes combustion - The process of burning in air, often with release of heat and light. composition - the types and amounts of simpler substances that make it up ... controlled experiment - An experiment that measures the effect of one variable at a time by keeping other variables constant. conversion factor - A ratio of equivalent quantities that is equal to 1 and used to convert the units of a quantity cubic meter (m³) - SI-derived units of Volume. data - Pieces of quantitative information obtained by observation. density - An intensive physical property of a substance at a given temperature and pressure, defined as the ratio of the mass to the volume: d = m/V derived unit - Any of various combinations of the seven SI base units. dimensional analysis (factor-label method) - A calculation method in which arithmetic steps are accompanied by cancelling units that represent physical dimensions. energy - The capacity to do work, to move matter. exact number - A quantity, usually obtained by counting or based on a unit definition, that has no uncertainty associated with it, and therefore, contains as many sig fig as a calculation requires. experiment - A set of procedural steps that tests a hypothesis.