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