Chem ch2
Hepta
7
The composition of air by volume is about 21% oxygen for every 100 molecules how many are not oxygen?
79%
What products may be formed when a. Hydrocarbon undergoes combustion
CO, CO2, HEAT
Oraganic compounds always contain
Carbon
Hydrocarbons are compounds that contain only
Carbon and hydrogen
Two products of respiration
Carbon dioxide and water
Equal volumes of molecular gases at a given temperature and pressure will always
Contain equal numbers of Molecules
Common units when reporting air pollution
Meang, ppb, ppm
Which of the following describes the different forms of matter
Mixtures can consist of any four phases of matter Both mixtures and pure substances are forms of matter
Which are considered air pollutants
Nitrogen dioxide Carbon dioxide Ozone Particulate matter
A molecule that always contains carbon and may contain hydrogen, oxygen and nitrogen is called what compound
Organic
The foods we eat are metabolized a to produce carbon dioxide, water and energy
Respiration
Pollutant is produced from chemical reactions involving one or more other pollutants
Secondary
Which of the following correctly describes air pollutants
Some air pollutants are hazardous at levels well below1 ppm Particulate matter is an example of an air pollutant
Equal volume of gas contain equal numbers of atoms or molecules as long as the samples are the same
Temp and pressure
Describe the troposphere
The atmosphere layer closest to Earth, where almost all weather occurs. It's the thinnest layer and is from 4 to 11 miles high (depending on latitude).
Which is the lower region of the atmosphere that we live in
Troposphere
Which of these activities do not cause indoor pollution
Turning on television Running the washing machine
penta
five
Sustainability
meeting the needs of the present without compromising the ability of future generations to meet their own needs
Di
two