CHEMISTRY SOL REVIEW MATERIAL Name SCIENTIFIC
... halogen, like NaCl. If an ionic compound is soluble in water, then it will produce aqueous ions in solution. Ionic compounds are considered to be electrolytes. ...
... halogen, like NaCl. If an ionic compound is soluble in water, then it will produce aqueous ions in solution. Ionic compounds are considered to be electrolytes. ...
Chapter7.2
... In a chemical reaction, the mass of the reactants is equal to the mass of the products. ...
... In a chemical reaction, the mass of the reactants is equal to the mass of the products. ...
atoms
... Taking all three laws together --- the law of mass conservation, the law of definite proportions, and the law of multiple proportions --- ultimately led Dalton to propose a new theory of matter. ...
... Taking all three laws together --- the law of mass conservation, the law of definite proportions, and the law of multiple proportions --- ultimately led Dalton to propose a new theory of matter. ...
- Catalyst
... Elements in a Sample of a Compound - I Problem: Sucrose (C12H22O11) is common table sugar. ( a) What is the mass percent of each element in sucrose? ( b) How many grams of carbon are in 24.35 g of sucrose? (a) Determining the mass percent of each element: mass of C per mole sucrose = 12 x 12.01 g C/ ...
... Elements in a Sample of a Compound - I Problem: Sucrose (C12H22O11) is common table sugar. ( a) What is the mass percent of each element in sucrose? ( b) How many grams of carbon are in 24.35 g of sucrose? (a) Determining the mass percent of each element: mass of C per mole sucrose = 12 x 12.01 g C/ ...
File
... 3. Solids diffuse very slowly compared to liquids and gases, due to close packing 4. Solids are incompressible 5. Most solids melt on heating, and some sublimate. 6. Solids have very high mass to volume ratio or density compared to liquid or gases. Characteristics of liquids ...
... 3. Solids diffuse very slowly compared to liquids and gases, due to close packing 4. Solids are incompressible 5. Most solids melt on heating, and some sublimate. 6. Solids have very high mass to volume ratio or density compared to liquid or gases. Characteristics of liquids ...
lec09 - McMaster Chemistry
... • equilibrium vs. completed reactions • equilibrium constant expressions • Reaction quotient • computing positions of equilibria: examples • Le Chatelier’s principle - effect on equilibria of: • addition of reactant or product • pressure • temperature YOU ARE NOT RESPONSIBLE for section 16.7 (relati ...
... • equilibrium vs. completed reactions • equilibrium constant expressions • Reaction quotient • computing positions of equilibria: examples • Le Chatelier’s principle - effect on equilibria of: • addition of reactant or product • pressure • temperature YOU ARE NOT RESPONSIBLE for section 16.7 (relati ...
Chemical Equilibrium Equilibrium A state where the reactants and
... A state where the reactants and products remain ____________________ over time. For some reactions, the equilibrium position favors the _____________ and the reaction appears to have gone to _______________ (amount of reactants is _______________)”Equilibrium lies to the right” (in direction of ...
... A state where the reactants and products remain ____________________ over time. For some reactions, the equilibrium position favors the _____________ and the reaction appears to have gone to _______________ (amount of reactants is _______________)”Equilibrium lies to the right” (in direction of ...
CHE 128 Autumn 2011 Specific Objectives – Exam 1 A periodic
... Compare densities to determine which substance will float on top or sink to the bottom Convert units raised to a power Identify an example of matter Predict the shape, volume, and compressibility of a substance (solid, liquid, or gas) Identify physical properties Identify chemical properties Use the ...
... Compare densities to determine which substance will float on top or sink to the bottom Convert units raised to a power Identify an example of matter Predict the shape, volume, and compressibility of a substance (solid, liquid, or gas) Identify physical properties Identify chemical properties Use the ...
Thermochemistry Exam Review Questions
... 8. In an electrochemical cell, electrons travel in which direction? A. from the anode to the cathode through the external circuit B. from the anode to the cathode through the porous cup C. from the cathode to the anode through the external circuit D. from the cathode to the anode through the porous ...
... 8. In an electrochemical cell, electrons travel in which direction? A. from the anode to the cathode through the external circuit B. from the anode to the cathode through the porous cup C. from the cathode to the anode through the external circuit D. from the cathode to the anode through the porous ...
51 Draw a Lewis electron-dot diagram for a
... Base your answers to questions 76 through 79 on the information below and on your knowledge of chemistry. During a laboratory activity, a student places 25.0 mL of HCl(aq) of unknown concentration into a flask. The student adds four drops of phenolphthalein to the solution in the flask. The solutio ...
... Base your answers to questions 76 through 79 on the information below and on your knowledge of chemistry. During a laboratory activity, a student places 25.0 mL of HCl(aq) of unknown concentration into a flask. The student adds four drops of phenolphthalein to the solution in the flask. The solutio ...
10/18/11 - Note: Once it is downloaded, click SET
... C3H8 + 5 O2 3 CO2 + 4 H2O (combustion reaction) atoms = atoms mass = mass energy = energy MOLES = MOLES - need a balanced chemical equation - Coefficients give the amounts of reactants and products - Mass-Mass Problems ...
... C3H8 + 5 O2 3 CO2 + 4 H2O (combustion reaction) atoms = atoms mass = mass energy = energy MOLES = MOLES - need a balanced chemical equation - Coefficients give the amounts of reactants and products - Mass-Mass Problems ...
Recycling and Chemical Mathematics
... present in the reactants must also be present in the products. Atoms cannot be created or destroyed during chemical reactions, merely rearranged. To check that no atoms have been created or destroyed in a reaction we could first visualize the situation by drawing all the atoms in the reaction (Figur ...
... present in the reactants must also be present in the products. Atoms cannot be created or destroyed during chemical reactions, merely rearranged. To check that no atoms have been created or destroyed in a reaction we could first visualize the situation by drawing all the atoms in the reaction (Figur ...
Chemistry XXI
... Go back and analyze the notes for the decomposition of Alanine. Based on our overall results, analyze the likelihood of amino acids forming in hydrothermal vents on the primitive Earth. The strong dependence on T of the decomposition of amino acids makes it difficult to decide whether the “hydrother ...
... Go back and analyze the notes for the decomposition of Alanine. Based on our overall results, analyze the likelihood of amino acids forming in hydrothermal vents on the primitive Earth. The strong dependence on T of the decomposition of amino acids makes it difficult to decide whether the “hydrother ...
Ordinary Level - State Examination Commission
... Figure 14 shows the arrangement of the outer electrons in a molecule of ammonia. How many (i) bond pairs, (ii) lone pairs, of electrons are there in the outer shell of the nitrogen atom in an ammonia molecule? The number of bond pairs and lone pairs of electrons in the outer shell of the central ato ...
... Figure 14 shows the arrangement of the outer electrons in a molecule of ammonia. How many (i) bond pairs, (ii) lone pairs, of electrons are there in the outer shell of the nitrogen atom in an ammonia molecule? The number of bond pairs and lone pairs of electrons in the outer shell of the central ato ...
Worksheet to accompany demos on exchange reactions
... oxidation number of -2 in compounds or polyatomic ions in which it is found (this is because oxygen tends to attract electrons to itself very well; we’ll discuss this later). So if O is assigned a number of -2, then the O’s end up with a total of 6 ―extra‖ electrons (three O’s x –2). Since there are ...
... oxidation number of -2 in compounds or polyatomic ions in which it is found (this is because oxygen tends to attract electrons to itself very well; we’ll discuss this later). So if O is assigned a number of -2, then the O’s end up with a total of 6 ―extra‖ electrons (three O’s x –2). Since there are ...
chemical reaction
... decomposition, single-displacement, and doubledisplacement reactions. • Classify a reaction as a synthesis, decomposition, single-displacement, double-displacement, or combustion reaction. • List three kinds of synthesis reactions and six kinds of decomposition reactions. ...
... decomposition, single-displacement, and doubledisplacement reactions. • Classify a reaction as a synthesis, decomposition, single-displacement, double-displacement, or combustion reaction. • List three kinds of synthesis reactions and six kinds of decomposition reactions. ...
Chapter 4 Aqueous Reactions and Solution Stoichiometry
... Separate the reactions into oxidation and reduction processes Work with one (ox or red) first Balance number of non-oxygen, non-hydrogen atoms first. Then balance oxygen with water Then balance hydrogen with H+ Then balance charge with electrons. Then balance other half-reaction using steps 3 throug ...
... Separate the reactions into oxidation and reduction processes Work with one (ox or red) first Balance number of non-oxygen, non-hydrogen atoms first. Then balance oxygen with water Then balance hydrogen with H+ Then balance charge with electrons. Then balance other half-reaction using steps 3 throug ...
Chemistry - Birkenhead School
... The three states of matter are solid, liquid and gas. Melting and freezing take place at the melting point, boiling and condensing take place at the boiling point. The three states of matter can be represented by a simple model. In this model, particles are represented by small solid spheres. Partic ...
... The three states of matter are solid, liquid and gas. Melting and freezing take place at the melting point, boiling and condensing take place at the boiling point. The three states of matter can be represented by a simple model. In this model, particles are represented by small solid spheres. Partic ...
Critical Point Dryer
... Atomic layer deposition (ALD) is a chemical vapour deposition technique based on the sequential self terminating gas-solid reactions to give thin films of nanometer range. ...
... Atomic layer deposition (ALD) is a chemical vapour deposition technique based on the sequential self terminating gas-solid reactions to give thin films of nanometer range. ...
Powerpoint
... Remarks: (b) Strictly speaking, Hof for aqueous ions depends on their concentrations. For example, heat changes for dissolving one mole of NaCl in 1 L of water and in 10000 L of water are different. We usually assume the concentration is indefinitely low. • Hof values for many compounds are tabul ...
... Remarks: (b) Strictly speaking, Hof for aqueous ions depends on their concentrations. For example, heat changes for dissolving one mole of NaCl in 1 L of water and in 10000 L of water are different. We usually assume the concentration is indefinitely low. • Hof values for many compounds are tabul ...
Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.