Chapter 1 Flashcards
Chemistry
The study of the structure and behavior of matter.
Value
A quantitative description that includes both a number and a unit.
Units
Are quantities defined by standards that people have agreed to use to compare one event or object to another.
Volume
The amount of space that something occupies. Can be defined as length cubed.
Mass
A measure of the amount of matter in an object. Also as the property of matter that leads to gravitational attractions between objects and therefore results in weight.
Matter
Anything that has mass and takes up space
Weight
Of an object. It measures the force of gravitational attraction between an object and a significantly larger body, such as the earth or moon.
As mass increases,
its weight increases correspondingly.
Temperature
A measure of the average motion of the particles in a system
Celsius scale
The freezing temp of water is defined as 0 degrees Celsius, and the temp of boiling water is defined as 100 degrees Celsius. A degree C is thus 1/100th of the temp difference between freezing and boiling.
Fahrenheit scale
Temp of freezing water is 32 degrees F, boiling water is 212 degrees F. There are 180 degrees Fahrenheit between freezing and boiling so one degree F is 1/180 of the temp difference between freezing and boiling.
Conversion of F to C
1.8 degrees F to 1 degree Celsius
Absolute zero
The value of 0 Kelvin (K). The lowest possible temperature.
Precision
How closely a series of measurements of the same object resemble each other.
Accuracy
Describes how closely a measured value approaches the true value of a the property.
