Chemistry Exam 1 vocab and sh*t

Ace your homework & exams now with Quizwiz!

Green chemistry principles:

-It's better to PREVENT WASTE than to treat or clean up the waste once it's formed. -It is better to USE LESS ENERGY.

4 gases that contribute to air pollution:

-carbon monoxide -Ozone -Nitrogen dioxide -sulfur dioxide

3 rules for naming compounds:

-the 2nd element ends in " - ide" - use prefixes to distinguish the number s of atoms in the chemical formulas -omit "mono" if there's only one atom for the first element in the chemical equation

molecule

2 or more atoms held together by chemical bonds in a certain arrangement

AQI

Air Quality Index; it indicates different levels of air pollution

shit found in the air we breathe

Nitrogen- 78% Oxygen- 21% Argon- 1% -carbon dioxide -water vapor

PM

Particulate matter, a mixture of tiny solid particles and microscopic liquid droplets

significant figure

a digit included (or excluded) to correctly represent the accuracy with which an experimental quantity is known.

microgram

a millionth of a gram

mixture

a physical combination of two or more pure substances present in variable amounts.

compound

a pure substance made up of 2 or more elements in a fixed characteristic chemical combination

chemical equation

a representation of a chemical equation using chemical formulas

PM(2.5)

a subset of PM(10) that includes particles with an average diameter of 2.5 mm or less.

chemical formula

a symbolic way to represent the elementary composition of a substance

carcinogenic

capable of causing cancer

coalescent

chemicals added to soften the latex particles in paint, so that these particles spread to form a continuous film of uniform thickness!

nonmetal

don't conduct heat or electricity and have NO characteristic appearances

metalloids

elements that lie between metals and nonmetals on the periodic table and do not fall into any other category

Law of conservation of matter and mass

in a chemical reaction, matter and mass are conserved.

element

one of the 100 pure substances in our world from which compounds are formed

PM(10)

particulate matter that includes particles with an average diameter of 10 micrometers or less

Metal

shiny and conduct electricity, heat well

atom

smallest unit of an element, that can exist as a stable, independent entity

ambient air

the air surrounding us, usually meaning the outside air

Exposure

the amount of the substance encountered

combustion

the chemical process of burning, a rapid combination of fuel with oxygen to release energy in the form of heat and light.

Toxicity

the intrinsic health hazard of a substance

troposphere

the lower region of the atmosphere in which we live, that lies directly above the surface of the earth

Risk assessment

the process of evaluating scientific data and making predictions in an organized manner about the probabilities of an outcome

green chemistry

types of chemical products and processes that reduce or eliminate the use or generation of hazardous substances

chemical reaction

when reactants are transformed into different substances called products


Related study sets

DSST- Intro to Computing Practice Test I

View Set

Entrep - Lesson 2 Midterms Part 2

View Set

Biological Psychology - MOTIVATION AND EATING

View Set

learning catalytics questions for cell exam 3

View Set