Math and PCPC Flashcards
Digits
Include the numbers past the decimal place, also known as figures
How to do Scientific Formula
Move decimal point until greater then ten but less than one and the exponent is number of times moved
Scientific Formula on Calculator
E stands for exponents and include “x 10^”
Adding and Subtracting Scientific Formula
Make it to the same exponent by moving the decimal, and then add or subtract
Multiplying Scientific Formula
Add exponents, multiply normally, then make it have one unit in front of decimal
Dividing Scientific Formula
Subtract exponents, divide normally, then have one unit to left of decimal
Units for Length, Mass, and Time
Meter, kilogram, and second
Conversion Factor
Factor used to convert one unit of measurement into another
Dimensional Analysis
Technique that involves study of dimensions/units of physical quantities (unit conversion or factor label or factor-unit system)
Physical Properties
Characteristics of matter that can be observed or measured without changing the identity of the substance
Extensive Properties
A physical property that depends on the amount of matter that is present (mass and volume)
Intensive Properties
A physical property that does not depend on the amount of matter present (density, boiling point,
color, malleability, ductility)
Chemical Properties
A substance’s ability to undergo changes that result in a different substance with different properties
Five Signs of a Chemical Change
Color change, precipitation, gas production, temperature change, changes in characteristic properties (odor, light given off)
Precipitation
The solid that forms from a solution during a chemical reaction (looks like a cloudy solid in an otherwise clear solution)
