Chapter 5 ppt
... Chemical Equation: A written statement using symbols and formulas to describe the changes that occur in a reaction Example: 2H2(g) + O2 (g) 2H2O (l) Letter in parentheses indicates the state of the substance: gas (g), liquid (l), solid (s), dissolved in water (aq) If heat is required for the react ...
... Chemical Equation: A written statement using symbols and formulas to describe the changes that occur in a reaction Example: 2H2(g) + O2 (g) 2H2O (l) Letter in parentheses indicates the state of the substance: gas (g), liquid (l), solid (s), dissolved in water (aq) If heat is required for the react ...
Chemical Equations Chemical Reaction: Interaction between
... Chemical Equations Chemical Reaction: Interaction between substances that results in one or more new substances being produced Example: hydrogen + oxygen Æ water Reactants of a Reaction: Starting materials that undergo chemical change; written on the left side of the equation representing the reacti ...
... Chemical Equations Chemical Reaction: Interaction between substances that results in one or more new substances being produced Example: hydrogen + oxygen Æ water Reactants of a Reaction: Starting materials that undergo chemical change; written on the left side of the equation representing the reacti ...
Chemistry - Set as Home Page
... 26. 58.5 is the __________ of NaCl. 27. 4.5 gms of nitrogen will have __________ molecules. 28. 28 gms of nitrogen will have __________ molecules. 29. 2 moles of SO2 is equal to __________ gms. 30. 1000 gms of H2O is equal to __________ moles. 31. The reactions, which proceed in both directions, are ...
... 26. 58.5 is the __________ of NaCl. 27. 4.5 gms of nitrogen will have __________ molecules. 28. 28 gms of nitrogen will have __________ molecules. 29. 2 moles of SO2 is equal to __________ gms. 30. 1000 gms of H2O is equal to __________ moles. 31. The reactions, which proceed in both directions, are ...
Formulas, Reactions, Equations, and Moles
... 1. The atoms in a pure element have an oxidation number of zero. 2. Alkali metals always have an oxidation number of +1; alkaline earth metals always have an oxidation number of +2. 3. Fluorine always has an oxidation number of -1. 4. Oxygen has an oxidation number of -2 in almost all compounds. Exc ...
... 1. The atoms in a pure element have an oxidation number of zero. 2. Alkali metals always have an oxidation number of +1; alkaline earth metals always have an oxidation number of +2. 3. Fluorine always has an oxidation number of -1. 4. Oxygen has an oxidation number of -2 in almost all compounds. Exc ...
Chemical Reaction
... involves the rearrangement of atoms. produces one or more new substances. can be observed by the appearance of new physical properties. A chemical reaction forms new products with different properties. An antacid (NaHCO3) tablet in water forms bubbles of carbon dioxide (CO2). © 2013 Pearson Ed ...
... involves the rearrangement of atoms. produces one or more new substances. can be observed by the appearance of new physical properties. A chemical reaction forms new products with different properties. An antacid (NaHCO3) tablet in water forms bubbles of carbon dioxide (CO2). © 2013 Pearson Ed ...
Review Study Guide for the Final
... What is it called when you have more electrons than protons? ...
... What is it called when you have more electrons than protons? ...
key for Unit 1 pp 21
... Metalloids are intermediate in behavior between metals and non-metals, and since metallic behavior varies across a period and up (or down) a group, we should not be surprised if there is not universal agreement on EXACTLY where the dividing line should be drawn. Some elements that are listed as meta ...
... Metalloids are intermediate in behavior between metals and non-metals, and since metallic behavior varies across a period and up (or down) a group, we should not be surprised if there is not universal agreement on EXACTLY where the dividing line should be drawn. Some elements that are listed as meta ...
Unit3_Stoichiometry_vs2
... • Section 5 of your data booklet has a complete list of names of all elements • Some elements are found in nature in their native form, like gold. Others are only found in chemical compounds which contain a fixed proportion of elements and are held together by chemical bonds ...
... • Section 5 of your data booklet has a complete list of names of all elements • Some elements are found in nature in their native form, like gold. Others are only found in chemical compounds which contain a fixed proportion of elements and are held together by chemical bonds ...
What is a sedimentary rock?
... Homogenous materials are the same through and through. They cannot physically broken into simpler components. ...
... Homogenous materials are the same through and through. They cannot physically broken into simpler components. ...
Old Exam
... I was recently in New York City where a street vendor offered to sell me a “genuine” platinum coin. After taking the coin back to the lab, I get out a graduated cylinder. The mass of the cylinder is 120.4367 g. I add water at 25 °C to the 25.0 mL mark. Then I weigh the cylinder on a balance and the ...
... I was recently in New York City where a street vendor offered to sell me a “genuine” platinum coin. After taking the coin back to the lab, I get out a graduated cylinder. The mass of the cylinder is 120.4367 g. I add water at 25 °C to the 25.0 mL mark. Then I weigh the cylinder on a balance and the ...
PowerPoint Notes
... • Organic - carbon, nitrogen, oxygen • Inorganic - metals, everything “non-carbon” • Analytical - Spectroscopy, “how much”, “what kind” • Physical - measurement, where physics meets chemistry • Biochemical - the chemistry of life • many others! ...
... • Organic - carbon, nitrogen, oxygen • Inorganic - metals, everything “non-carbon” • Analytical - Spectroscopy, “how much”, “what kind” • Physical - measurement, where physics meets chemistry • Biochemical - the chemistry of life • many others! ...
lecture 3
... Liquid – has definite volume, changeable shape Gas – has changeable shape and volume Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Liquid – has definite volume, changeable shape Gas – has changeable shape and volume Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings ...
Main-group elements as transition metals
... distortion (that is, bending) increases as the group is descended, and it is possible to write these distorted structures using a valencebond approach (Fig. 1d), analogous to Lappert’s representations of the ethylene analogues (Fig. 1b and c). In essence, the heavier alkyne analogues also contain an ...
... distortion (that is, bending) increases as the group is descended, and it is possible to write these distorted structures using a valencebond approach (Fig. 1d), analogous to Lappert’s representations of the ethylene analogues (Fig. 1b and c). In essence, the heavier alkyne analogues also contain an ...
MOLES! - ChemGod.com
... If I want to track the chemistry, I need to know how many atoms/molecules are in my sample. ...
... If I want to track the chemistry, I need to know how many atoms/molecules are in my sample. ...
elements of chemistry unit
... The molecular formula for ammonia is NH3. Even though the rules of oxidation do not tell us the oxidation number for nitrogen, we know the oxidation number for non-elemental hydrogen is + 1. Since there are three hydrogen atoms in NH3, the hydrogen atoms must have a combined oxidation number of + 3. ...
... The molecular formula for ammonia is NH3. Even though the rules of oxidation do not tell us the oxidation number for nitrogen, we know the oxidation number for non-elemental hydrogen is + 1. Since there are three hydrogen atoms in NH3, the hydrogen atoms must have a combined oxidation number of + 3. ...
Chemistry
... To know: What a chemical reaction is, the scheme of reaction, the chemical equation. The laws of conservation of mass of substances in a course of chemical reactions, the volume ratios of gases in chemical reactions. External effects that accompany chemical reactions. The concept of oxidizing agent, ...
... To know: What a chemical reaction is, the scheme of reaction, the chemical equation. The laws of conservation of mass of substances in a course of chemical reactions, the volume ratios of gases in chemical reactions. External effects that accompany chemical reactions. The concept of oxidizing agent, ...
Descriptive Chemistry of Elements d-Block
... The oxidation number of a metal centre is the charge left on the metal when all the ligands are removed. For example, removal of three Br ions and three neutral ammonia molecules from [CoBr3(NH3)3] leaves three positive charges on cobalt. Therefore, the oxidation number of cobalt in [CoBr3(NH3)3] i ...
... The oxidation number of a metal centre is the charge left on the metal when all the ligands are removed. For example, removal of three Br ions and three neutral ammonia molecules from [CoBr3(NH3)3] leaves three positive charges on cobalt. Therefore, the oxidation number of cobalt in [CoBr3(NH3)3] i ...
Chapter 3 Stoichiometry: Calculations with Chemical
... • Compounds containing C, H and O are routinely analyzed through combustion in a chamber like this – C is determined from the mass of CO2 produced – H is determined from the mass of H2O produced – O is determined by difference after the C and H have been ...
... • Compounds containing C, H and O are routinely analyzed through combustion in a chamber like this – C is determined from the mass of CO2 produced – H is determined from the mass of H2O produced – O is determined by difference after the C and H have been ...
2(g)
... 1) Write out the correct chemical formulae for the products and the reactants. Be sure to include all states of matter! 2) Balance the atoms or ion present in the greatest number. You may do this by finding the lowest common multiple of the two. 3) Continue to systematically balance the rest of the ...
... 1) Write out the correct chemical formulae for the products and the reactants. Be sure to include all states of matter! 2) Balance the atoms or ion present in the greatest number. You may do this by finding the lowest common multiple of the two. 3) Continue to systematically balance the rest of the ...
IPC: Essential Learning Outcomes By the IPC District Team
... Identify and connect the universal solvent to the polarity of water ...
... Identify and connect the universal solvent to the polarity of water ...
Unit #8 - consumerchem
... Balancing Chemical Equations In all balanced equations: # of atoms of each element on the left of the "yields" arrow must equal # of atoms of each element on the right of the "yields" arrow Many equations can be balanced by trial and error… However, the following five rules will make balancing quick ...
... Balancing Chemical Equations In all balanced equations: # of atoms of each element on the left of the "yields" arrow must equal # of atoms of each element on the right of the "yields" arrow Many equations can be balanced by trial and error… However, the following five rules will make balancing quick ...
Chemistry Content Review Notes
... 2. Uranium has 3 common isotopes. If the abundance of U-234 is 0.01%, the abundance of U-235 is 0.71% and the abundance of U-238 is 99.28%, what is the average atomic mass? 3. Titanium has five common isotopes: Ti-46 (8.0%), Ti-47 (7.8%), Ti-48 (73.4%), Ti-49 (5.5%), and Ti-50 (5.3%). What is the av ...
... 2. Uranium has 3 common isotopes. If the abundance of U-234 is 0.01%, the abundance of U-235 is 0.71% and the abundance of U-238 is 99.28%, what is the average atomic mass? 3. Titanium has five common isotopes: Ti-46 (8.0%), Ti-47 (7.8%), Ti-48 (73.4%), Ti-49 (5.5%), and Ti-50 (5.3%). What is the av ...
Chemistry
... medicine called the Elixir of Life that can cure all diseases, but like the Philosopher's Stone, it was never found. ...
... medicine called the Elixir of Life that can cure all diseases, but like the Philosopher's Stone, it was never found. ...