Science study flash cards exam

a substance that uses chemicals to kill plants and animals

a chemcial that kills particular insects

human-made fibres (such as cloth or thread) made in the labratory using raw chemicals

human-made materials consisting of long chains of molecules

two or more metals mixed together

Workplace hazardous material information system which provieds information on how to handle chemcials

Material safety data sheet things that wont fit on the products label

Hazardous Household products symbol to help users use them safely

transformation that occurs when two or more substances that react together producing 1 or more substances

substance present before chemical reaction

substance present after a chemical reaction

chemical reaction which a substance combine with oxygen to produce heat light burning

type of reaction during an acid and a base produce a salt compound and water

solid that forms because of a chemical change

obvious or unnoticable production or absorption of a form of energy

any chemical reacton that releases heat

any chemical reaction that absorbs heat

symbolic representaton of a chemical reaction that uses words to indicate reactants and products

reaction in which 2 or more elements combine to form a compound

a reacton that breaks a compound into elements that make it up

compounds (such as carbon dioxide, water and, mehtane) that trap in Earth's atmosphere

long-term trend toward warmer temperatures accompanied by extreme climatic events and shifting of the climatic zones

natural process of Earth's warming and cooling intervals

chemicals in the air, water, or soil that cause harm to living things or to the environment

sometimes referred to as acid rain; rain, snow, fog, or dew that has become more acidic

acidic materials (liquids or solids that contain sulfric or nitric acid) that are deposited on Earth

SO2 (g) acidic gas that mixes with water vapour in clouds to form acid precipitation

NOx (g) naturally produced acidic gases that mix with water vapour in clouds to form acid precipitation

process of adding natural limestone to lake water to neautralize lakes that have been acidified by acid deposition; bring ph to normal

device installed in industrial smokestacks to remove sulfur and other pollutants formed during the combustion of coal

process that chemically breaks down or degreades metal

one type of corrosion

ability to work

stored energy that can be converted into other forms

energy due to motion

heat

kinetic energy captured by windmills

heat produced within Earth that comes close to the surface; can be used for heating or to produce electricity

energy that enters the system

system in which energy is changed from one form into another

energy that leaves the system

energy in chemicals

device that makes electricity

sets of blades put at an angle so they can collect energy from fast moving water, steam, or wind

kinetic energy of moving water converted into electric energy

chemical energy stored in a fossil fuel and converted into thermal energy then to kinetic energy then to electric energy

thermal energy released when atoms are split that is produced electricity

items that convert light energy from the sun into electricity

N; unit of measure for force; force applied over distance

rate at which energy id transferred or work is done

W; international unit representing one joule of energy per second

see watt hour

kW*h; 1000 watts per hour

see kilowatt hour

measure how well energy is converted to accomplish the intended risk

special parts of green plants that capture solar energy

green enzyme in plant cells that enables photosynthesis

process by which plants used cholorphyll and sunlight to convert carbon dioxide and water into glucose and oxygen

process used by all plant and animal cells obtain energy from food

state of equilibrium or balance; regulation of the body's internal environment

rate at which a human body uses energy

strach-like carbohydrate in which the body stores glucose for future use

source of energy and energy storage in animals

animal fats and some oils associated with an increased risk of heart disease

most vegetable oils, associated with a lowered risk of heart disease

building block and souce of energy for the body

body's needs for energy

formed from the remains of swamp vegetation and or animals that lived about 300 million years ago include coal, crude oil, and natural gas

petrolium

crude oil

porous rock containing tiny droplets of oil forced there by changes in earth's crust

method used by geologists to dertermine the location of potential oil and natural gas reservoirs by sending shock waves through the crust

working component in an oil well; lifts oil located deep under ground hundreds of meters to the surface

working component in an oil well located underground; lifts oil hundreds of meters to the surface

answer

process by which substance such as crude oil is sepertated into component parts by boiling it and then consending the resulting vapors

group of fossil fuels so named because they are made up of carbon and hydrogen

useable only once will not form again in nature in the forseeable future

formerly called global warming; during this process some places on Earth may be much warmer while others may get cooler

process in which a food is heated to kill the microbes that make it spoil

illness; something that prevents noraml functioning of the body

micro organisms

disease causing agents such as bacteria, viruses, fungi, and protists

microscopic, one celled organisms may be beneficial harmful or neither

microscopic, non cellular disease-causing agents

organisms that live offf deadand decaying organsims or are parasitic on living organisms

single-celled organisms that share some characteristics with both animals and plants; some cause serious disease such as malaria

living organisms that get their nourishment from a host organism cannot live independently

illness that can be spread from one organism to another

form of food poisoning caused by bacteria

form of food poisoning caused by bacteria

maintaining clean, germ free conditions to help prevent disease