Chemistry Unit 1

Something observable that happens in nature is called a ____

phenomenon

Name the boiling points on the Fahrenheit, Celsius, and kelvin scale.

212 degrees f, 100 degrees c, and 372.15 degrees k

Name the freezing points on the Fahrenheit and Celsius and Kelvin scale

32 degrees f and 0 degrees c and 273 k

Know the lab equipment

:)

___ is the measure of the length of events and the duration of the interval between two events

time

A process whereby the concentration of one solution can be determined by adding controlled amounts of a solution with a known concentration is called ____

titration

The theoretical temperature at which molecules stop moving is called ____ and is on the Kelvin temperature scale.

absolute zero

___ is the rate of change of velocity

acceleration

___ refers to how close a measurement is to its true value

accuracy

The SI unit of electric current equal to one coulomb of electrons passing a particular location in one second is the _____.

ampere

___ is the measure of a two dimensional surface within a specific boundary expressed in square units

area

___ is a unit chosen to be the standard for a particular type of measurement

base unit

The SI unit of luminous intensity is the _____, which is based on the brightness of light emitted by a single candle.

candela

____ is a standard used for comparison

control

___ an amount of electrons approximately equal to 6.241 509 48 * 10^18

coulomb

To ____ is to pour a liquid from one container into another without splashing or disturbing the contents of either

decant

___ is the mass per unit of volume of a substance

density

____ is the mass per unit of volume of a substance

density

____ is a unit formed when other units are combined

derived unit

____ is a method of a problem solving that focuses on units of measurement

dimensional analysis

___ the measure of the flow of electrons passing a particular location in a given amount of time

electric current

___ is an organized procedure for conducting a controlled, measurable, and repeatable test or investigation

experiment

___ is the total kinetic energy of all the particles within a substance

heat

____ is the total kinetic energy of all the particles within a substance

heat

____ is a possible explanation for an observation, phenomenon, or scientific problem that can be tested through experimentation

hypothesis

A ___ is still based on a physical standard, which is a platinum- iridium cylinder kept at the BIPM in Paris.

kilogram

____ is the measure of distance

length

____ is the measure of the amount of brightness of a light source

luminous intensity

___ is the amount of matter in an object

mass

What is chemistry the study of?

matter, its properties, and the reactions or changes it undergoes

The ____ SI base unit of mass equal to the distance light travels in a vacuum in 1/299792458 of a second

meter

____ is a visual, verbal, or mathematical representation designed to explain a natural phenomenon

model

The mass of a substance based on the number of particles of matter contained in that substance is called its ____

molar mass

____ is the mass of one mole of a substance

molar mass

The SI unit of particles of matter equal to 6.02 * 10^23 particles is the ______.

mole

Name the steps of the scientific method

observation, problem/question, hypothesis, experimentation, analyze data and draw conclusions, and repeat the experiments to very results, then report results

____ is the measure of the number of units, such as atoms, molecules or ions of which all matter is made

particles of matter

The ____ is the SI unit of force equal to one newton exerted on an area of one square meter (N/m2)

pascal

A _____ is a physical item used as a standard for measurement

physical standard

How close a series of measurements are to each other is called ___

precision

___ is the force per unit of area

pressure

____ are facts or pieces of information that can be observed by the senses

qualitative data

_____ are facts or pieces of info that can be expressed as an amount or quantity

quantitative data

A conversion factor is a ____, often set up as a fraction, used to convert one set of units to another.

ratio

____ is a simple, factual, precise statement that describes an action or set of actions

scientific law

___ is an orderly method for observing nature and making predictions

scientific method

________ is a method of writing very large or very small numbers as a ____ greater than one and less than 10 multiplied by a power of 10

scientific notation, decimal

A ____ can be defined by a calculated standard as the duration of 9192 631 770

second

The SI base unit for time is the ___, which is based on the duration of 9192 631 770 cycles of a particular frequency of a cesium -133 atom.

second

____ are all the known digits in a measurement, plus one estimated last digit.

significant figures

The rate of motion of an object is called _____

speed

Something established by authority as a rule for measurement is called a ______.

standard

_____ is the proper form for a number in scientific notation and consists of a number with only one digit to the left of the decimal point multiplied by a power of 10

standard form

___ is a measurement of the average kinetic energy of the particles of a substance

temperature

slug

the unit of mass that can be accelerated at the rate of 1.0 ft/sec2 when acted on by a force of one pound

____ is a hypothesis that has been confirmed many times by experimental data with no exceptions

theory

A specified quantity with which any other quantity of the same kind is measured is called a _____.

unit

___ is something that can change or be changed

variable

The rate of an object with regard to direction is called ____.

velocity

___ is the amount of space occupied by a three dimensional object and expressed in cubic units

volume

___ the measure of the average kinetic energy of the particles of a substance

volume

___ is the measure of the gravitational force acting upon an object

weight