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chapter 3 lesson 1,2

vocabulary

TermDefinition
matter all materials in the universe that has mass and occupies space is called
atoms are the basic units of matter
element is a chemical substance with a given set of properties that cannot be broken down into substance with other properties
nucleus central core, containing particles called protons and neutrons
molecule is a combination of two or more atoms of the same type or different types joined by covalent bonds
compound a substance composed of atoms of two or more different elements is called
hydrocarbons are organic compounds containing only hydrogen and carbon
solution a mixture in which all the ingredients are evenly distributed is called a
macromolecules proteins, nucleic acids, carbohydrates, and lipids are called
proteins are polymers that serve many functions in and organisms. they are organic compounds made up of carbon, hydrogen, oxygen, nitrogen, and sometime sulfer
nucleic acids are macromolecules that direct protein production
carbohydrates are polymers that consist of atoms of carbon, hydrogen, and oxygen.
lipids are a chemically diverse group of macromolecules that are classified together because they do not dissolve in water
pH the acidity or alkalinity of a solution is described by
feedback loop sometimes an event is both a cause, or input, and an effect, or output, in the same system, a cyclical process called a
erosion the removal of soil by water , wind, ice, or gravity, can lead to a positive feedback loop
geosphere is made of all the rock at and below Earth's surface
lithosphere is the hard rock on and just below Earth's surface the outermost layer of the geosphere
biosphere consists of all the planets living or once living things and the nonliving parts of the environment with which they interact
atmosphere consists of the layers of gases surrounding our planet
hydrosphere encompasses all water salt, fresh, liquid, ice, and vapor on Earth's surface underground, and in the atmosphere
Created by: william myers
 

 



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