representing chemical compounds
... Classify each of these statements as always true, AT; sometimes true, ST; or never true, NT. ________ 8. The molecular formula for table salt is NaCl. ________ 9. Whenever two elements form more than one compound, the different masses of one element that combine with the same mass of the other eleme ...
... Classify each of these statements as always true, AT; sometimes true, ST; or never true, NT. ________ 8. The molecular formula for table salt is NaCl. ________ 9. Whenever two elements form more than one compound, the different masses of one element that combine with the same mass of the other eleme ...
CHAPTER 10 - NUCLEAR PHYSICS
... When chemical bonds are formed, electrons are shared between atoms or they are transferred from one atom to another to create a positive and negative ion. When chemical bonds are formed due to electron transfer, this process is called ionic bonding. Chemical bonds are formed spontaneously when elect ...
... When chemical bonds are formed, electrons are shared between atoms or they are transferred from one atom to another to create a positive and negative ion. When chemical bonds are formed due to electron transfer, this process is called ionic bonding. Chemical bonds are formed spontaneously when elect ...
Chapter 4: Introduction to Earth Chemistry Section 1 Notes
... In a chemical formula, the ___________ that appears after the symbol for an element shows the number of __________________________ that are in a molecule. For example: H2O = 2 H (hydrogen atoms) + 1 O (oxygen atom) Chemical Equations Elements and compounds often combine through _____________________ ...
... In a chemical formula, the ___________ that appears after the symbol for an element shows the number of __________________________ that are in a molecule. For example: H2O = 2 H (hydrogen atoms) + 1 O (oxygen atom) Chemical Equations Elements and compounds often combine through _____________________ ...
How many significant figures are there in each of these
... SIGNIFICANT, still need to be included, so we know how big the number is! ...
... SIGNIFICANT, still need to be included, so we know how big the number is! ...
Notes matter energy
... 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms (and 7 total atoms). Subscripts indicate the number of atoms in the formula (when only one atom of a given type is present, no ‘1’ is written). The chemical formula can be written from a description of the composition. For example, the molecule nia ...
... 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms (and 7 total atoms). Subscripts indicate the number of atoms in the formula (when only one atom of a given type is present, no ‘1’ is written). The chemical formula can be written from a description of the composition. For example, the molecule nia ...
For H 2 O
... write the symbols and charges for the ions next to each other, always writing the cation first 2. cross over the charges by using the absolute value of each ion’s charge as the subscript for the other ion 3. check the subscripts and divide them by their largest common factor to give the smallest pos ...
... write the symbols and charges for the ions next to each other, always writing the cation first 2. cross over the charges by using the absolute value of each ion’s charge as the subscript for the other ion 3. check the subscripts and divide them by their largest common factor to give the smallest pos ...
Review for SNC 2P Chemistry Unit(SPRING 2014)
... b) Draw a sketch to represent each of the molecules in question 11a) . For example, methane might be a black circle (carbon atom) attached to four white circles (hydrogen atoms). ...
... b) Draw a sketch to represent each of the molecules in question 11a) . For example, methane might be a black circle (carbon atom) attached to four white circles (hydrogen atoms). ...
Chemistry Post-Enrolment Worksheet C
... of an oxygen atom and a hydrogen atom and has an overall 1- charge. Brackets can be used if we need more than one of a polyatomic ion in our formula. e.g. ammonium carbonate is made up of ammonium ions, NH4+ , and carbonate ions, CO32In order for the charges to balance we need two ammonium ions for ...
... of an oxygen atom and a hydrogen atom and has an overall 1- charge. Brackets can be used if we need more than one of a polyatomic ion in our formula. e.g. ammonium carbonate is made up of ammonium ions, NH4+ , and carbonate ions, CO32In order for the charges to balance we need two ammonium ions for ...
Tutorial 1
... 1. Use the second member of each group from Group 1A to Group 7A to show that the number of valance electrons on an atom of the element is the same as its group number. 2. Use Lewis dot symbol to show the formation of aluminum oxide (Al 2O3) 3. Explain what an ionic bond is? And name five metals and ...
... 1. Use the second member of each group from Group 1A to Group 7A to show that the number of valance electrons on an atom of the element is the same as its group number. 2. Use Lewis dot symbol to show the formation of aluminum oxide (Al 2O3) 3. Explain what an ionic bond is? And name five metals and ...
Chapter 7 Chemical Formulas and Chemical Compounds
... Examples: Iron (II) , Iron (III). Then just put the name of the anion. FeCl2 Iron (II) chloride Fe2O3 Iron (III) oxide ...
... Examples: Iron (II) , Iron (III). Then just put the name of the anion. FeCl2 Iron (II) chloride Fe2O3 Iron (III) oxide ...
Nomenclature and chemical reactions PPT
... write the symbols and charges for the ions next to each other, always writing the cation first 2. cross over the charges by using the absolute value of each ion’s charge as the subscript for the other ion 3. check the subscripts and divide them by their largest common factor to give the smallest pos ...
... write the symbols and charges for the ions next to each other, always writing the cation first 2. cross over the charges by using the absolute value of each ion’s charge as the subscript for the other ion 3. check the subscripts and divide them by their largest common factor to give the smallest pos ...
Practice Exam 2 - Department of Chemistry and Biochemistry
... A) atoms are held together by sharing electrons. B) oppositely charged ions are held together by strong electrical attractions. C) atoms of different metals form bonds. D) atoms of noble gases are held together by attractions between oppositely charged ions. E) atoms of metals form bonds to atoms of ...
... A) atoms are held together by sharing electrons. B) oppositely charged ions are held together by strong electrical attractions. C) atoms of different metals form bonds. D) atoms of noble gases are held together by attractions between oppositely charged ions. E) atoms of metals form bonds to atoms of ...
atoms-chemical
... • An ionic bond can form if two atoms are so unequal in their attraction for valence electrons that one atom strips an electron completely from the other becoming ions and form an ionic bond. • sodium with one valence electron • chlorine with 7 valence electrons ...
... • An ionic bond can form if two atoms are so unequal in their attraction for valence electrons that one atom strips an electron completely from the other becoming ions and form an ionic bond. • sodium with one valence electron • chlorine with 7 valence electrons ...
Chapter 9 - Fayetteville State University
... 7) Periodic Law: States that elements arranged in order of the atomic number share similar chemical and physical properties. These arrangement are called groups, examples are the alkali metals (Li, Na, K, Rb, Cs), the halogens (F, Cl, Br, I). 8) Groups: A sequence of elements of increasing atomic nu ...
... 7) Periodic Law: States that elements arranged in order of the atomic number share similar chemical and physical properties. These arrangement are called groups, examples are the alkali metals (Li, Na, K, Rb, Cs), the halogens (F, Cl, Br, I). 8) Groups: A sequence of elements of increasing atomic nu ...
Ch. 2-1 Nature of Matter
... the publisher. These illustrations may not be reproduced in any format for any purpose without express written permission from the publisher. ...
... the publisher. These illustrations may not be reproduced in any format for any purpose without express written permission from the publisher. ...
Chapter 7 Chemical Formulas
... *subscript 2 refers to 2 Al ions *subscript 4 refers to 4 O atoms in the sulfate ion *subscript 3 refers to everything inside the ( ), giving us 3 sulfate ions, with a total of 3 sulfur atoms and 12 oxygen atoms ...
... *subscript 2 refers to 2 Al ions *subscript 4 refers to 4 O atoms in the sulfate ion *subscript 3 refers to everything inside the ( ), giving us 3 sulfate ions, with a total of 3 sulfur atoms and 12 oxygen atoms ...
Essential Standard: 8.P.1 Understand the properties of matter and
... compose all substances and determine the characteristics properties of substances. Elements are pure substances that cannot be changed into simpler substances. Elements are composed of one kind of atom. Compounds are pure substances that are composed of two or more types of elements that are chemica ...
... compose all substances and determine the characteristics properties of substances. Elements are pure substances that cannot be changed into simpler substances. Elements are composed of one kind of atom. Compounds are pure substances that are composed of two or more types of elements that are chemica ...
First Semester Honors Chemistry Exam Review (2011
... 62. The shiny appearance of a metal is most closely related to what? 63. If a material can be shaped or extended by physical pressure, such as hammering, which property does the material have? 64. What are the electrons involved in the formation of a chemical bond called? 65. Why are nonpolar covale ...
... 62. The shiny appearance of a metal is most closely related to what? 63. If a material can be shaped or extended by physical pressure, such as hammering, which property does the material have? 64. What are the electrons involved in the formation of a chemical bond called? 65. Why are nonpolar covale ...
- Catalyst
... 2. Atoms of one element cannot be converted into atoms of another element in a chemical reaction. Elements can only be converted into other elements in nuclear reactions in which protons are changed. 3. All atoms of an element have the same number of protons and electrons, which determine the chemic ...
... 2. Atoms of one element cannot be converted into atoms of another element in a chemical reaction. Elements can only be converted into other elements in nuclear reactions in which protons are changed. 3. All atoms of an element have the same number of protons and electrons, which determine the chemic ...
binary molecular compounds
... equal to its negative charge it would have as an anion o the less electronegative element is given the number equal to its positive charge it would have as an anion • Fluorine, F, is ALWAYS given the oxidation number of -1, because it is the most electronegative ...
... equal to its negative charge it would have as an anion o the less electronegative element is given the number equal to its positive charge it would have as an anion • Fluorine, F, is ALWAYS given the oxidation number of -1, because it is the most electronegative ...
Flexbook - What is Matter?
... the substance is an element. Elements cannot be chemically broken down into anything smaller and still retain the properties of the element. For example, an atom of iron can be smashed into electrons, protons, and neutrons, but those pieces would not have the properties of iron. Atoms from two or mo ...
... the substance is an element. Elements cannot be chemically broken down into anything smaller and still retain the properties of the element. For example, an atom of iron can be smashed into electrons, protons, and neutrons, but those pieces would not have the properties of iron. Atoms from two or mo ...
Ionic vs Molecular Compounds Name Period Unit 4 – HW 1
... 29. Use the crisscross method to write the formula for the ionic compound formed between iron (III) and oxygen. ...
... 29. Use the crisscross method to write the formula for the ionic compound formed between iron (III) and oxygen. ...