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CLASSIFICATION OF THE ELEMENTS
CLASSIFICATION OF THE ELEMENTS

... a. half the distance between the nuclei of two atoms. ...
atomic number
atomic number

... 3- The strongest non-metallic element lies in group ----------------. ( 7A) 4- ------------------- lie preceding noble gases in the periodic table, and during the chemical reaction they form -------------------ions. ( non metals - -ve ions ) ...
PART 1: ATOMIC NUMBER - hrsbstaff.ednet.ns.ca
PART 1: ATOMIC NUMBER - hrsbstaff.ednet.ns.ca

... 2. Find all of the gasses in the periodic table and with a black pencil crayon, outline each of them on the above table. 3. In the table below, indicate which gasses are located in each of the periods. Your table will not have elements in every blank space. ...
Section 15.1
Section 15.1

... gases or liquids in their pure form. Fluorine (F), chlorine (Cl), and bromine (Br) form salts when the bond with alkali metals. ...
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Elements and the Periodic Table Practice Test

... 9. There exists several _____________ of argon, such as Ar-36, Ar-38, and Ar-40. 10.Yet the mass for argon on the periodic table is 39.948 atomic mass units and not 36, 38, or 40. Explain why. ...
11 BALANCING CHEMICAL EQUATIONS 1. 2 K + 1
11 BALANCING CHEMICAL EQUATIONS 1. 2 K + 1

... Solid carbon is added to aluminum oxide in order to form pure aluminum metal and carbon dioxide gas. ...
2 - CronScience
2 - CronScience

... Example (needs to be a double replacement reaction) AgNO3 + NaCl  AgCl + NaNO3 1. this is the full balanced equation 2. next, write it as an ionic equation by splitting the compounds into their ions: Ag1+ + NO31- + Na1+ + Cl1-  AgCl + Na1+ + NO31Note that the AgCl did not ionize, because it is a “ ...
SAT Practice Test 3
SAT Practice Test 3

... HCl is a proton donor Powdered zinc has a greater surface area NH3 is a polar substance Water boils when the vapor pressure of the water is equal to the atmospheric pressure In an exothermic reaction the products have less potential energy than the reactants Pressure and volume have a direct relatio ...
Preview Sample 1
Preview Sample 1

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... Assuming the process is 95.0% efficient, how many grams of CaSO4 may be produced from 1.00 x 102 grams of SO2? 202 g ...
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Acids and Bases and Aqueous Equilibria
Acids and Bases and Aqueous Equilibria

... Gilbert Newton Lewis (1875-1946) In a 1923 paper, Lewis wrote: "We are so habituated to the use of water as a solvent, and our data are so frequently limited to those obtained in aqueous solutions, that we frequently define an acid or a base as a substance whose aqueous solution gives, respectively, ...
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. ...
Chapters 6, 8
Chapters 6, 8

... There are ~ 11 million chemical compounds. Some of the arbitrary (common) names you may recognize (water = hydrogen oxide H2O, laughing gas = dinitrogen monoxide N2O, quicksilver = mercury Hg). One cannot memorize arbitrary names of all of them. Chemical nomenclature is the system of names for compo ...
Study Guide – Honors Chemistry: Exam One
Study Guide – Honors Chemistry: Exam One

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... identify substances and determine the number of atoms of each element. Ⓡ 8.5 (E) Chemical Reactions: Students will be able to investigate how evidences of chemical reactions indicate that new substances are formed. Ⓡ 8.5 (F) Balancing Equations: Students will be able to recognize whether or not a ch ...
Give the name and symbol for the element found in
Give the name and symbol for the element found in

... that these blank spaces represented elements that had not yet been discovered, and based on their position in the periodic table, Mendeleev was able to predict the properties of these undiscovered elements. When these elements were discovered, their properties were very similar to those predicted by ...
2016 - Specimen Paper 2 - Cambridge International Examinations
2016 - Specimen Paper 2 - Cambridge International Examinations

... reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge A ...
Chapter 2 - Test Bank
Chapter 2 - Test Bank

... called inert gases, in Group 8A). Another group that is useful to recognize is the three metals: copper (Cu), silver (Ag), and gold (Au), which make up the “coinage metals.” This group will be important when we discuss exceptions to the electron configurations of these elements in a later chapter. S ...
Chemical bonding
Chemical bonding

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Power point types of chemical rxn
Power point types of chemical rxn

... 1. Elements that form ionic compounds: Magnesium metal reacts with oxygen gas to form magnesium oxide. • 2Mg + O2  2MgO 2. Elements that form covalent compounds: Nitrogen gas and oxygen gas join to form dinitrogen monoxide. • 2N2 + O2  2N2O SYNTHESIS REACTION (iron + sulphur): http://www.youtube.c ...
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... Complete the table that shows the reaction, if any, of the oxides with acid and alkali. Indicate a reaction with "R" and no reaction with "NR". ...
AQA C2 revision book
AQA C2 revision book

... held together by strong forces called covalent bonds, but there are only very weak forces between the molecules. This means: 1) They have low melting and boiling points (many are liquids or gases). 2) They tend to be soft and/or have little strength. 3) They do not conduct electricity Simple molecul ...
FREE Sample Here
FREE Sample Here

... 1. List several differences between ionic and covalent bonds. Ionic bonds occur when ions of opposite charge are mutually attracted. Acids and bases are examples of ionic compounds. Covalent bonds are strong chemical bonds that occur when atoms share electrons. Methane and sugar are examples of cova ...
Periodic Trends - Naperville Community Unit School
Periodic Trends - Naperville Community Unit School

... masses, some of the inconsistencies associated with Mendeleev's table were eliminated. The modern periodic table is based on Moseley's Periodic Law (atomic numbers). ...
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Halogen

The halogens or halogen elements (/ˈhælɵdʒɨn/) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17.The name 'halogen' means 'salt-producing'. When halogens react with metals they produce a wide range of salts, including calcium fluoride, sodium chloride (common salt), silver bromide and potassium iodide. The group of halogens is the only periodic table group that contains elements in three of the four main states of matter at standard temperature and pressure. All of the halogens form acids when bonded to hydrogen. Most halogens are typically produced from minerals or salts. The middle halogens, that is chlorine, bromine and iodine, are often used as disinfectants. Organobromides are the most important class of flame retardants. Elemental halogens are generally toxic.
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