Introductory Chemistry: Chapter 2
1. Scientific Notation: A system used to write very big or very small numbers,
often containing many zeros, more compactly and precisely. A number written
in scientific notation consists of a decimal part and exponential part (10 raised
to a particular exponent).
2. Decimal Part: One part of a number expressed in scientific notation.
3. Exponential Part: One part of a number expressed in scientific notation; it
represents the number of places the decimal point has moved.
4. Exponent: A number that represents the number of times a term is multiplied
by itself. For example, in 2^4 the exponent is 4 and represents 2x2x2x2.
5. Significant Digits (Figures): The non-place-holding digits in a reported
measurement, they represent the precision of a measured quantity
6. Trailing: Zeros at the end of a number, but before an implied decimal point.
7. Units: Previously agreed-on quantities used to report experimental
measurements. Units are vital in chemistry.
8. English System: A unit system commonly used in the United States.
9. Metric System: The unit system commonly used throughout the world.
10. International System (SI): The standard set of units for science
measurements, based on the metric system.
11. Meter (m): The SI standard unit of length.
12. Kilogram (kg): The SI standard unit of mass.
13. Second (s): The SI standard unit of time
14. Mass: A measure of the quantity of matter within an object
1. Scientific Notation: A system used to write very big or very small numbers,
often containing many zeros, more compactly and precisely. A number written
in scientific notation consists of a decimal part and exponential part (10 raised
to a particular exponent).
2. Decimal Part: One part of a number expressed in scientific notation.
3. Exponential Part: One part of a number expressed in scientific notation; it
represents the number of places the decimal point has moved.
4. Exponent: A number that represents the number of times a term is multiplied
by itself. For example, in 2^4 the exponent is 4 and represents 2x2x2x2.
5. Significant Digits (Figures): The non-place-holding digits in a reported
measurement, they represent the precision of a measured quantity
6. Trailing: Zeros at the end of a number, but before an implied decimal point.
7. Units: Previously agreed-on quantities used to report experimental
measurements. Units are vital in chemistry.
8. English System: A unit system commonly used in the United States.
9. Metric System: The unit system commonly used throughout the world.
10. International System (SI): The standard set of units for science
measurements, based on the metric system.
11. Meter (m): The SI standard unit of length.
12. Kilogram (kg): The SI standard unit of mass.
13. Second (s): The SI standard unit of time
14. Mass: A measure of the quantity of matter within an object
