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... Carried out in a Hoffman’s apparatus (shown to the right), it splits water compounds into oxygen molecules and hydrogen molecules Water Oxygen + Hydrogen H2O O2 +H2 The electrolysis reaction proves that compounds are made of more than one kind of element. Dalton’s Atomic Theory: 1. All matte ...
... Carried out in a Hoffman’s apparatus (shown to the right), it splits water compounds into oxygen molecules and hydrogen molecules Water Oxygen + Hydrogen H2O O2 +H2 The electrolysis reaction proves that compounds are made of more than one kind of element. Dalton’s Atomic Theory: 1. All matte ...
C - Upton-by-Chester High School
... No free electrons or movement of charge (1) In graphite only 3 electrons are used in bonding (1) Leaves a free electron to conduct electricity (1) c) Ionic substances conduct when melted or dissolved, but not when solid. When solid the ions are in fixed positions, so there is no movement of charge ( ...
... No free electrons or movement of charge (1) In graphite only 3 electrons are used in bonding (1) Leaves a free electron to conduct electricity (1) c) Ionic substances conduct when melted or dissolved, but not when solid. When solid the ions are in fixed positions, so there is no movement of charge ( ...
Chemistry Semester Test Study Guide Chapters
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
Document
... Atoms gain electrons (negatives) and become more negative. Atoms with 2-3 valence electrons will LOSE electrons and become more positive. Who will lose and who will gain an electron? ...
... Atoms gain electrons (negatives) and become more negative. Atoms with 2-3 valence electrons will LOSE electrons and become more positive. Who will lose and who will gain an electron? ...
Exam Review - hrsbstaff.ednet.ns.ca
... 25. Rutherford's observation that a gold fail scatters some alpha particle through angles greater than 90º enabled him to conclude that a) all atoms are electrically neutral. b) the nucleus of the atom contains the positive charge. c) an electron has a very small mass. d) electrons are a part of al ...
... 25. Rutherford's observation that a gold fail scatters some alpha particle through angles greater than 90º enabled him to conclude that a) all atoms are electrically neutral. b) the nucleus of the atom contains the positive charge. c) an electron has a very small mass. d) electrons are a part of al ...
Unit 2 Review: Chemistry - Mr. Hoover's Science Classes
... called a molecular compound is formed. In molecular compounds, the atoms share electrons to form covalent bonds. The atoms bonded together are called molecules. ...
... called a molecular compound is formed. In molecular compounds, the atoms share electrons to form covalent bonds. The atoms bonded together are called molecules. ...
Chapter 13 notes
... 3. (a) Dissolve Al2(SO4)3 in water. (b) How many moles of aluminum ions and sulfate ions are produced by dissolving 1 mol of Al2(SO4)3. (c) What is the total number of moles of ions produced by dissolving 1 mol of Al2(SO4)3? (a) Al2(SO4)3(s) ...
... 3. (a) Dissolve Al2(SO4)3 in water. (b) How many moles of aluminum ions and sulfate ions are produced by dissolving 1 mol of Al2(SO4)3. (c) What is the total number of moles of ions produced by dissolving 1 mol of Al2(SO4)3? (a) Al2(SO4)3(s) ...
Ionic vs Molecular Compounds Name Period Unit 4 – HW 1
... 16. Chemical formulas can also be written for ionic compounds. In this case, however, the formula does ...
... 16. Chemical formulas can also be written for ionic compounds. In this case, however, the formula does ...
Bonding Notes
... transfer of electron(s) between two atoms. The reason for a transfer of electrons in an ionic bond is that there is a large difference in electronegativity between the metal atom and the nonmetal atom. The nonmetal atom because of its larger electronegativity plucks the electron(s) from the lower el ...
... transfer of electron(s) between two atoms. The reason for a transfer of electrons in an ionic bond is that there is a large difference in electronegativity between the metal atom and the nonmetal atom. The nonmetal atom because of its larger electronegativity plucks the electron(s) from the lower el ...
8. Molecular Geometry
... Bonds are polar when one atom is positive and the other negative. Molecules with many atoms have polarity, with one end positive, the other negatively charged. You can predict the polarity of the molecule by looking at the ends of the molecule to see if it has a positive end and a negative end. Lone ...
... Bonds are polar when one atom is positive and the other negative. Molecules with many atoms have polarity, with one end positive, the other negatively charged. You can predict the polarity of the molecule by looking at the ends of the molecule to see if it has a positive end and a negative end. Lone ...
Ionic Equations and State Symbols
... single atom, e.g Fe(s), Ag(s), Cl(s). Gases use the symbol of the Molecule, example the diatomic gases ydrogen, oxgyen and Nitrogen would be written: H2(g), O2(g) , N2(g) ,etc. Balance the Equation by placing whole number co-efficients at the front of each term of the equation where warranted. Do no ...
... single atom, e.g Fe(s), Ag(s), Cl(s). Gases use the symbol of the Molecule, example the diatomic gases ydrogen, oxgyen and Nitrogen would be written: H2(g), O2(g) , N2(g) ,etc. Balance the Equation by placing whole number co-efficients at the front of each term of the equation where warranted. Do no ...
Examination 3 Multiple Choice Questions
... ii) How were the measurements interpreted? iii) Why were the results so "shocking?" -Particles were fired at a thin sheet of Gold foil. The deflection of the particles was then measured. The deflection results, which were unexcepted because they thought the particles would simply plow right through ...
... ii) How were the measurements interpreted? iii) Why were the results so "shocking?" -Particles were fired at a thin sheet of Gold foil. The deflection of the particles was then measured. The deflection results, which were unexcepted because they thought the particles would simply plow right through ...
Chapter 7 - HCC Learning Web
... • Isoelectronic series – ions have the same number and configuration of electrons – Ionic size decreases with an increasing nuclear charge ...
... • Isoelectronic series – ions have the same number and configuration of electrons – Ionic size decreases with an increasing nuclear charge ...
R E V I E W -- P R A C T I C E E X A
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
Resource for Final Exam Prep
... 2) All atoms of a given element are identical; the atoms of different elements are different and have different properties. 3) Atoms of an element are not changed into different types of atoms by chemical reactions; atoms are neither created nor destroyed in chemical reactions. 4) Compounds are form ...
... 2) All atoms of a given element are identical; the atoms of different elements are different and have different properties. 3) Atoms of an element are not changed into different types of atoms by chemical reactions; atoms are neither created nor destroyed in chemical reactions. 4) Compounds are form ...
Lecture 9
... In the total ionic equation there are some ions that appear in the same form on both the reactant and product side of the equation. These are called spectator ions. H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → H2O(l) + Na+(aq) + Cl-(aq) Eliminating the spectator ions from both sides results in the net io ...
... In the total ionic equation there are some ions that appear in the same form on both the reactant and product side of the equation. These are called spectator ions. H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → H2O(l) + Na+(aq) + Cl-(aq) Eliminating the spectator ions from both sides results in the net io ...
AQA C2 revision book
... Compounds of metals, such as sodium chloride (NaCl) or copper sulphate (CuSO 4) are made up of positive metal ions (e.g. Na+ ) and negative non-metal ions (e.g. Cl-). These are arranged in a regular lattice so that each positive ion is surrounded by negative ions and each negative ion is surrounded ...
... Compounds of metals, such as sodium chloride (NaCl) or copper sulphate (CuSO 4) are made up of positive metal ions (e.g. Na+ ) and negative non-metal ions (e.g. Cl-). These are arranged in a regular lattice so that each positive ion is surrounded by negative ions and each negative ion is surrounded ...
Chapter 2 PPT - Richsingiser.com
... brittle solids with high melting points; molecular compounds have lower melting points, and may be liquids or gases at room temperature. ...
... brittle solids with high melting points; molecular compounds have lower melting points, and may be liquids or gases at room temperature. ...
Metals and non-metals III IMPORTANT POINTS Non-metals
... form ions by gaining electrons and are said to be electronegative nare oxidising agents as they react by gaining electrons N + n e == N react with air or oxygen to form acidic oxides, which can dissolve in water to form acids do not react with dilute acids, water or steam form covalent compounds wit ...
... form ions by gaining electrons and are said to be electronegative nare oxidising agents as they react by gaining electrons N + n e == N react with air or oxygen to form acidic oxides, which can dissolve in water to form acids do not react with dilute acids, water or steam form covalent compounds wit ...
TYPES OF CHEMICAL REACTIONS AND SOLUTION CHEMISTRY
... 1. _________________________ is a technique for determining the amount of a certain substance by doing a titration. 2. A ____________________ involves delivery of a measured volume of a solution of known concentration, _______________, into a solution containing the substance being analyzed, _______ ...
... 1. _________________________ is a technique for determining the amount of a certain substance by doing a titration. 2. A ____________________ involves delivery of a measured volume of a solution of known concentration, _______________, into a solution containing the substance being analyzed, _______ ...
Which frequency of light has the most energy
... In what way do atomic spectra support the Bohr model of the atom? A. The spectra indicate that electrons have practically no mass. B. The spectra make it possible to calculate the charge on the electron. C. The spectra indicate that the nucleus is very small compared to the atom. D. The spectra cont ...
... In what way do atomic spectra support the Bohr model of the atom? A. The spectra indicate that electrons have practically no mass. B. The spectra make it possible to calculate the charge on the electron. C. The spectra indicate that the nucleus is very small compared to the atom. D. The spectra cont ...
Chem Sheets to Memorize
... *You will need to be able to write molecular chemical reactions and do mole conversions to do these questions. 1. 30.5 g of sodium metal reacts with a solution of excess lithium bromide. How many grams of lithium metal are produced? 2. How many molecules are in 100. L of potassium hydroxide solution ...
... *You will need to be able to write molecular chemical reactions and do mole conversions to do these questions. 1. 30.5 g of sodium metal reacts with a solution of excess lithium bromide. How many grams of lithium metal are produced? 2. How many molecules are in 100. L of potassium hydroxide solution ...