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Mendeleev created the first periodic table by arranging elements in order of
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How did chemists change Mendeleev's periodic table in the early 1900s?
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Study Guide Chpt.4 S

QuestionAnswer
Mendeleev created the first periodic table by arranging elements in order of increasing atomic mass
How did chemists change Mendeleev's periodic table in the early 1900s? They used atomic number instead of the atomic mass to organize the elements
From an element's location in the periodic table, you can predict Its properties
Which of these statements about a column of the periodic table is true? The elements have similar properties
The factor that determines how an atom interacts with the other atoms is its number if valence electrons
Which of the following have the same number and arrangement of valence electrons elements in a group
Which of the following is not a physical property of most metals? being a liquid at room temperature
Which of the following about metals is true? Metals show a wide range of chemical properties
In the periodic table, the most reactive metals are found in Group 1, the first column on the left
Which group of elements have two valence electrons in their atoms alkaline earth metals
Where are nonmetals located on the periodic table? to the right of the zigzag line
Which group contains the most elements metals
At room temperature more than half of the nonmetals are gases
which member of the carbon family is a nonmetal carbon
how does nuclear fusion create new elements inside stars? small nuclei combine to form larger nuclei
The sun is made up of mostly hydrogen
Where are metals located in the periodic table to the left of the zigzag line
In which part of an atom are the valence electrons located farthest from the nucleus
The elements in a row of the periodic table are in the same period
The elements in a column of the periodc table are in the same family
What information in the periodic table indicated the number of protons in an atom? the element's atomic number
Which part of the atom move around the nucleus electrons
The atomic number of an element is based on the number of protons in its nucleus
What prediction did Mendeleev make that came true less than 20 years later He said that three new elements would be discovered, and he described their properties
The two most common alkaline earth metals are calcium and magnesium
Which of the following statements about transition metals is true They are so similar that it's often difficult to find difference between them
Which group of elements share characteristics with both metals and nonmetals metalloids
The elements that do not ordinarily form compounds are noble gases
Which member of the carbon family is a metalloid silicon
Fluorine, chlorine, bromine, and iodine are part of a group called halogens
The modern periodic table is organized according to atomic number
The horizontal rows in the periodic table are known as periods
The elements in a group from the periodic table have ____ characteristics similar
The elements in each ___ of the periodic table generally have the same number of valence electrons group
Describing a metal as a ____ means that it can be pounded into shape malleable
The most chemically active metals are in ___ of the periodic table Group 1
Nonmetals can be found on the ___ side of the periodic table right
In general, the physical properties of nonmetals are ___ to the properties of metals different
Fusion is the process in which existing nuclei ___ and make new nuclei combine
Atoms of the halogen family elements typically gain ____ when they react one electron
Mendeleev discovered that periodic patterns appeared when he arranged the elements in order of increasing ___ atomic mass
The property of an element that indicated the number if protons in its atoms is the ___ atomic number
A column of elements in the periodic table is called a group, or ___ family
The electrons in an atom that are involved in forming chemical bonds are called ___ valence electrons
Elements that transmit electricity and heat easily are called good ___ conductors
The chemical reactivity of metal tends to ___from left to right across the periodic table decrease
Some elements on the right side if the periodic table from the molecules of two atoms each, which are called ____ molecules diatomic
Nonmetals are __ conductors of heat and electricity poor
Astronomers generally agree that the matter in the sun and its planets came from a _____ an explosion that broke apart a massive star billions of years ago supernova
In the 1800s, Dimitri Mendeleev organized the first truly useful ____ periodic table
An elements ____ can be predicted from its location in the periodic table properties
Each chemical element is given a specific ___ that usually consists of one or two letters chemical symbol
Elements in Group 1 have ___ valence electrons one
Most metals are in the ___ state at room temperature solid
Brass is a ____ formed by mixing copper and zinc alloy
Elements known as ___ are located to the right of the metalloids on the periodic table nonmetals
At room temperature, all the metalloids are solids, while most nonmetals are ___ gases
A substance that will conduct electricity only under certain conditions is called a ____ semiconductor
In stars, matter exists in the ____ state in which elements have been stripped away from the nuclei of atoms plasma
When two nuclei combine in a ____ reaction, a huge amount of energy is released. fusion
Created by: melisa210
 

 



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