CHM1025 Final Exam Review (A+ Guaranteed)

Chemistry correct answers The study of composition, structure, properties, and reactions of matter Matter correct answers Any material that has mass and occupies space Chemical correct answers Any substance (matter) that has specific composition obtained by or used in chemical reactions Branches of Chemistry correct answers organic chemistry, inorganic chemistry, biochemistry, analytical chemistry, physical chemistry Scientific method correct answers The process used by scientists to explain observations in nature. Steps in scientific method correct answers observation, hypothesis, experiments, theory Measuring tool or device correct answers used to compare some dimension of an object to a standard. Types of measurement correct answers length, volume, mass, time, temperature. Length correct answers measured using a meter stick, has a unit of meter (m) in the metric and SI systems. For small measurements in chemistry, use centimeters (cm) Volume correct answers the space occupied by a substance, has a unit liter (L) in metric system and cubic meter in the SI system. Use mL for small measurements in chemistry. Mass correct answers The quantity or amount of material it contains. It is measured using a balance, has a unit gram (g) in the metric system and kilogram (kg) in the SI system. Weight correct answers Measure of gravitational pull on an object. Temperature correct answers Indicates how hot or cold an object is. It is measured in celsius in metric system. The SI system uses Kelvin (K) scale. Time correct answers Has a unit second(s) in both the metric and SI system. Prefixes correct answers They are used in front of a base unit to increase or decrease the size of that unit by a factor of 10. Equalities correct answers State the same measurement in two different units. Exact Numbers correct answers Numbers obtained by counting objects e.g. 2 soccer balls