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Chap.3 Matter

QuestionAnswer
A molecule is chemically combined
Compounds are pure substances that are made of more than one element
The substances that make up a mixture keep most of their properties
An example of a homogeneous mixture is salt water
An example of a heterogeneous mixture is concrete
The best mixed of all mixtures is a solution
The smallest particle of an element that has the properties of that element is an atom
Chemical symbols are shorthand way of representing the chemical element
An alloy is a solution of metals
The description of a chemical reaction using symbols and formulas is called a chemical equation
In a solution, the substance that does the dissolving is the solvent
Matter that consists of two or more substances mixed together but not chemically combined is called a mixture
A mixture that does not appear to be the same throughout is said to be heterogeneous
The simplest type of pure substance is a element
A *blank* is made of two or more atoms chemically bonded together. molecule
True or False: The substances in a mixture are chemically combined. False, the are not chemically combined, they are physically combined
True or False: According to its makeup, matter can be classified as elements, compounds, mixtures, and solids. False, it is composed of elements, compounds, mixtures, and solutions
True or False: A solution is a type of homogeneous mixture formed when one substance dissolves in another. True
True or False: Water is an example of an element False, water is an example of a compound
True or False: An equation can be balanced by placing the appropriate number, called a subscript, in front of the chemical symbols or formulas. False, it is called a coefficient
Created by: 2022470
 

 



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