Chem 2 Vocab

Question 1

Metric system

Answer 1

System of standard units that use the meter

Question 2

International d Unites or SI system

Answer 2

A revised metric system that scientist use today

Question 3

Base units

Answer 3

Unit of measurement that is based off of an object or event in the physical world

Question 4

Second

Answer 4

The time needed for a cesium -113 atom to complete 9,192,631,770

Question 5

Meter

Answer 5

The distance that light travels in a vacuum in 1/299,792,458 of a second

Question 6

Vacuum

Answer 6

Space that contains no matter

Question 7

Volume

Answer 7

Space occupied by an object

Question 8

Liter

Answer 8

Metric unit of volume

Question 9

Density

Answer 9

Ratio that compares the mass of an object to its volume

Question 10

Temperature

Answer 10

How hot or cold something is

Question 11

Heat

Answer 11

Flows from a region to high intensity to a region of low

Question 12

Thermometer

Answer 12

Like a tube where is has a liquid that expands when heated and contracts when cooled
Examples, thermocouple, optical pyrometer, thermistor. They measure high temp

Question 13

Scientific notation

Answer 13

Expresses numbers as a multiple of 2 factors 6.5 x10 1

Question 14

Exponential form

Answer 14

a way of writing a number that is multiplied by itself more than once

Question 15

Arrows rule

Answer 15

If decimal is moved to right then exponent is moved to left on number line and vice versa
Ex 500. Decimal moves to left 5.00 it moved left 2 times so number line goes right 0 1 2
5x10^2

Question 16

Dimensional analysis

Answer 16

Method of problem-solving that focuses on units that are used to describe matter

Question 17

Conventional factors

Answer 17

A ratio, fraction, of equivalent values used to express the same quantity in different units