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Chemistry Ch 1 hrw

Stepp's Chemistry Ch 1 - Matter and Change

The branches of chemistry are: organic, inorganic, ___, analytical, biochemistry, and ___ chemistry physical, theoretical
Any substance with a definite composition chemical
The study of the properties and changes of matter and their relation to energy Physical Chemistry
Chemistry can be broken in to the following three areas basic research, applied research, and ___ development technological
Mass is a measure of the amount of ___ matter
Matter is anything that has ___ and takes up ___ mass, space
The smallest unit of an element that maintains the properties of that element is a(an) ___ atom
A pure substance that cannot be broken down into simpler, stable substances and is made of only one type of atom is a(an) ___ element
A __ is a substance that can be broken down into simple stable substances. compound
Compounds are made of __ __ __ __ that are chemically bonded two or more elements
There are two kinds of properties of matter: ___ and ___ intensive and extensive
___ properties depend upon the amount of matter that is present extensive
___ properties do not depend upon the amount of matter present intensive
A __ property is a characteristic that can be observed or measured without changing the identity of the substance physical
Physical properties describe the substance itself rather than how it can ___ into other substances change
Melting point, boiling pt., conductivity, tensile strength, color, and malleability are are examples of ___ properties physical
A change in a substance that does not involve a change in the ___ of the substance is a physical change identity
Solid, liquid, ___ and ___ are states of matter. gas, plasma
Solids have definite ___ and ___ shape, volume
Liquids have definite ___ but take on the shape of their ____ volume, container
___ have neither definite shape or definite volume Gases
A high temperature more energetic gas-like state in which the atoms have lost most of their electrons is called ___ plasma
Chemical properties cannot be observed without changing the ___ of the substance because they deal with reactivity identity
A chemical ___ results in the formation one or more different substance with different properties change (or reaction)
Yields, produces, forms, reacts to make, combusts, and decomposes to form, are some of the ways to read the ___ in a chemical reaction arrow
Initial substance that react to form the products are called ___ reactants
Substances formed by the reaction are called ___ products
When physical or chemical changes occur, ___ is always involved. energy
Matter is neither created nor ___ in a chemical reaction destroyed
Energy can be released or absorbed but the total amount remains the same because energy is always ___ according to the Law of Conservation of Energy conserved
When two or more substances are blended together physically but not chemically bonded it is called a ___ mixture
Unlike ___, substances in mixtures retain their individual identities and properties compounds
___ mixtures have uniform composition homogeneous
Another name for homogeneous mixture is ___ solution
Mixtures that are not homogeneous throughout are called ___ heterogeneous
Pure substances and solutions are both homogeneous but only a ___ has varying composition (concentration) solution
The periodic table can be divided into metals, nonmetals and ___ metalloids
metals, unlike nonmetals are good conductors of both heat and ___ electricity
Noble Gases are elements in the far ___ column of the periodic table that are very nonreactive right
Columns on the periodic table are called ___ and contain elements that are very similar. groups
A ___ is a row on the periodic table. Family
Created by: criswell216