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Chapter 5 - Geocities
Chapter 5 - Geocities

... Section 1: History of the Periodic Table Periodic law: The physical and chemical properties of the elements are periodic functions of their atomic numbers. Reworded Periodic law: When the elements are arranged in order of increasing atomic number, elements with similar properties appear at regular i ...
Name PERIODIC TABLE WORKSHEET
Name PERIODIC TABLE WORKSHEET

... The majority of elements in the periodic table are (metals / nonmetals ), Elements in the periodic table are arranged according to their An element with both metallic and nonmetallic properties is called a ...
Review Packet
Review Packet

... 2. Which two families contain the most active metals? ...
PERIODIC TRENDS PRACTICE QUIZ
PERIODIC TRENDS PRACTICE QUIZ

... the periodic table. b. Upper right-hand corner of the periodic table. c. Lower left-hand corner of the periodic table. d. Upper left-hand corner of the periodic table. 8. Of the following elements, which one would have the smallest ionization energy? a. Neon b. Lithium c. Boron d. Nitrogen 9. As one ...
PERIODIC TRENDS PRACTICE QUIZ
PERIODIC TRENDS PRACTICE QUIZ

... the periodic table. b. Upper right-hand corner of the periodic table. c. Lower left-hand corner of the periodic table. d. Upper left-hand corner of the periodic table. 8. Of the following elements, which one would have the smallest ionization energy? a. Neon b. Lithium c. Boron d. Nitrogen 9. As one ...
Families of Elements
Families of Elements

...  Elements in group IA of the periodic table, with the exception of hydrogen  Have one electron in their outer energy levels  Are the most chemically active of all metals (meaning an element readily combines with other substances to form compounds)  NEVER found in pure form  A way to identify al ...
Periodic Table Virtual Activity http://my.uzinggo.com/cplogin/ The
Periodic Table Virtual Activity http://my.uzinggo.com/cplogin/ The

... 1. What is the first element of the periodic table ad why? ...
(2) for each
(2) for each

... Because they do not readily combine with other elements to form compounds, the noble gases are called inert. The family of noble gases includes helium, neon, argon, krypton, xenon, and radon. All the noble gases are found in small amounts in the earth's ...
GO 3_3 The Periodic Table
GO 3_3 The Periodic Table

... I = purple-black solid with a metallic crystalline sheen ...
Document
Document

... 1. Why are group numbers so important? __________________________________________ _______________________________________________________________________ 2. Why is hydrogen in Group 1 if it is a nonmetal?_____________________________________ __________________________________________________________ ...
4.3 Exploring the Modern Periodic Table
4.3 Exploring the Modern Periodic Table

... a) How is the electron arrangement similar for these two elements? (Hint: look at the outer shell) b) The elements Br and I are also in the second last column of the periodic table. How many electrons do you think would be in their outer electron shell? 8. Elements in the same column tend to form si ...
S1-2-02: What is the basic subatomic structure of an atom?
S1-2-02: What is the basic subatomic structure of an atom?

... 9. Which one of the following is a chemical change? a) You boil water to make dinner. b) You crack open eggs. c) You add a bit of salt to the water. d) You poach the eggs by placing them into the water. e) You cut the eggs up to eat them. 10. Which one of the following is a physical change? a) Acid ...
Name Period
Name Period

... 6. A(n) _______________ transmits heat and electricity easily. 7. A material that is _________________ can be drawn into a wire. 8. ____________________ is the ease and speed with which an element combines with other elements and compounds. 9. A(n) ______________________ is a mixture of metals. ...
The Periodic Table Notes
The Periodic Table Notes

... Have seven valence electrons Very good at stealing an electron from other compounds which make them great oxidizers Known as halogens because they react with metals to create salts At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine is a solid ...
Matter: Building Blocks of the Universe Chapter 5 Classification of
Matter: Building Blocks of the Universe Chapter 5 Classification of

... the same number of valence electrons  Family 1—Alkali—soft, silver, white, shiny—react or combine with other elements easily—never found alone in nature  Family 2—Alkaline—Earth metals—very reactive  Between Family 2 and 13 are the transition metals—these are the metals you are most familiar with ...
STUDY GUIDE CHAPTER 8 TEST AND ELEMENT SYMBOLS
STUDY GUIDE CHAPTER 8 TEST AND ELEMENT SYMBOLS

... Sodium and potassium are _______________________ metals. ALKALI METALS Chlorine and bromine are examples of _______________________. HALOGENS Semiconductors, also known as _______________________, have some properties of metals and some properties of nonmetals. METALLOIDS The _______________________ ...
The Periodic Table - Science Education at Jefferson Lab
The Periodic Table - Science Education at Jefferson Lab

... • Because they do not readily combine with other elements to form compounds, the noble gases are called inert. • The family of noble gases includes helium, neon, argon, krypton, xenon, and radon. • All the noble gases are found in small amounts in the earth's ...
Elements and Compounds
Elements and Compounds

... Recognize: to acknowledge formally. Differentiate: to mark or show a difference in. ...
Nomenclature Notes
Nomenclature Notes

... Step 1: Use the periodic table to identify the symbols of the elements (note that the second elements’ ending is –ide meaning, for example, that bromide is actually bromine). Step 2: Determine what number the prefix stands for and write this number as a subscript after the symbol. The number one (1) ...
Periodic Table Vocabulary Periodic Table ​– a chart that organizes
Periodic Table Vocabulary Periodic Table ​– a chart that organizes

...  – an element that does not conduct electricity or heat and is usually a  gas at room temperature. Nonmetals are brittle, have high ionization energies and  high electronegativity values. Nonmetals tend to gain electrons to form anions.  Nonmetals are found on the right side of the boron staircase.  ...
How to 2 Video Narrative
How to 2 Video Narrative

... Periods are horizontal rows on the Periodic Table. Periods go across the Periodic Table from the left to the right. Recall the location of the atomic numbers of the elements. Do you notice how the atomic numbers increase as you move left to right—or horizontally—in a period? The first row is called ...
Periodic Table Funsheet
Periodic Table Funsheet

... 16. As you go from left to right across the periodic table, the elements go from (metals / nonmetals) to (metals / nonmetals). 17. The most active element in Group 17 is _______________________________________________________. 18. What sublevels are filling across the Transition Elements? __________ ...
Periodic Table
Periodic Table

... melting points. How many valence e- do they have? Differences in their reactivity is how they react with water. They are good conductors of electricity. Mg can be as hard as steel when mixed with other metals but is extremely light. How could that be important? Calcium is important for bones and mus ...
u4ohnotes18f2005 - Teach-n-Learn-Chem
u4ohnotes18f2005 - Teach-n-Learn-Chem

... alkali metals: group 1 (except H); 1+ charge; very reactive alkaline earth metals: group 2; 2+ charge; less reactive than alkalis halogens: group 17; 1– charge; very reactive noble gases: group 18; no charge; unreactive lanthanides: elements 57–71 ...
Unit 4 Notes - Teach-n-Learn-Chem
Unit 4 Notes - Teach-n-Learn-Chem

... alkali metals: group 1 (except H); 1+ charge; very reactive alkaline earth metals: group 2; 2+ charge; less reactive than alkalis halogens: group 17; 1– charge; very reactive noble gases: group 18; no charge; unreactive lanthanides: elements 57–71 ...
< 1 ... 28 29 30 31 32 33 34 35 36 ... 39 >

Boron group

The boron group are the chemical elements in group 13 of the periodic table, comprising boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl), and ununtrium (Uut). The elements in the boron group are characterized by having three electrons in their outer energy levels (valence layers). These elements have also been referred to as icosagens and triels.Boron is classified as a metalloid while the rest, with the possible exception of ununtrium, are considered post-transition metals. Ununtrium has not yet been confirmed to be post-transition, due to relativistic effects, might not turn out to be one. Boron occurs sparsely, probably because bombardment by the subatomic particles produced from natural radioactivity disrupts its nuclei. Aluminium occurs widely on earth, and indeed is the third most abundant element in the Earth's crust (8.3%). Gallium is found in the earth with an abundance of 13 ppm. Indium is the 61st most abundant element in the earth's crust, and thallium is found in moderate amounts throughout the planet. Ununtrium is never found in nature and therefore is termed a synthetic element.Several group 13 elements have biological roles in the ecosystem. Boron is a trace element in humans and is essential for some plants. Lack of boron can lead to stunted plant growth, while an excess can also cause harm by inhibiting growth. Aluminium has neither a biological role nor significant toxicity and is considered safe. Indium and gallium can stimulate metabolism; gallium is credited with the ability to bind itself to iron proteins. Thallium is highly toxic, interfering with the function of numerous vital enzymes, and has seen use as a pesticide.
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