Chapter #2-Newest CPub
... Atomic Theory • Law of Mass Conservation: The total mass of substances does not change during a chemical reaction (Lavoisier). • Law of Definite (or Constant) Composition: No matter what its source, a particular chemical compound is composed of the same elements in the same parts (fractions) by mass ...
... Atomic Theory • Law of Mass Conservation: The total mass of substances does not change during a chemical reaction (Lavoisier). • Law of Definite (or Constant) Composition: No matter what its source, a particular chemical compound is composed of the same elements in the same parts (fractions) by mass ...
Chemical Bonding
... • Proteins are complex, organic compounds made up of amino acids. • Lipids are organic compounds that contains fats, oils, waxes, phospholipids, and steroids. They are made of fatty acid chains. • Nucleic acids are large, complex molecules that contain the hereditary information for all living thing ...
... • Proteins are complex, organic compounds made up of amino acids. • Lipids are organic compounds that contains fats, oils, waxes, phospholipids, and steroids. They are made of fatty acid chains. • Nucleic acids are large, complex molecules that contain the hereditary information for all living thing ...
IONIZATION METHODS IN MASS SPECTROMETRY
... to providing high sensitivity, REMPI is also highly selective because only those compounds can be analyzed that exhibit the required specific UV transition at the laser wavelength applied. REMPI is a soft ionization technique, hence there is virtually no fragmentation. Since REMPI is a pulsed type m ...
... to providing high sensitivity, REMPI is also highly selective because only those compounds can be analyzed that exhibit the required specific UV transition at the laser wavelength applied. REMPI is a soft ionization technique, hence there is virtually no fragmentation. Since REMPI is a pulsed type m ...
Chem vocab quiz definitons
... Viscosity is a property of liquids that describe their resistance or ability to flow. Crystal is a solids in which the particles form a regular 3 dimensional pattern, common to ionic compounds. Condensation is the change of state from gas to liquid. Sublimation the change of state from solid directl ...
... Viscosity is a property of liquids that describe their resistance or ability to flow. Crystal is a solids in which the particles form a regular 3 dimensional pattern, common to ionic compounds. Condensation is the change of state from gas to liquid. Sublimation the change of state from solid directl ...
Chemistry Semester One Exam Review Name:
... 3. On which type of mixture(s) does the Tyndall Effect scatter light? On which type of mixture does it pass thru? ...
... 3. On which type of mixture(s) does the Tyndall Effect scatter light? On which type of mixture does it pass thru? ...
All you need to know about Additional Science
... If we have a solution containing 100 g of sodium hydroxide, how much chlorine gas should we pass through the solution to make bleach? Too much, and some chlorine will be wasted, too little and not all of the sodium hydroxide will react. ...
... If we have a solution containing 100 g of sodium hydroxide, how much chlorine gas should we pass through the solution to make bleach? Too much, and some chlorine will be wasted, too little and not all of the sodium hydroxide will react. ...
Packet
... ____ 90. According to kinetic molecular theory, gas particles a. are spaced far apart. b. are constantly moving. c. have mass. d. all of the above. ____ 91. Kinetic energy a. is energy associated with movement. b. increases with increasing temperature. c. is given by ½mv2 d. all of the above. ____ 9 ...
... ____ 90. According to kinetic molecular theory, gas particles a. are spaced far apart. b. are constantly moving. c. have mass. d. all of the above. ____ 91. Kinetic energy a. is energy associated with movement. b. increases with increasing temperature. c. is given by ½mv2 d. all of the above. ____ 9 ...
2008 Midterm Multiple Choice
... A) contains a small percentage of the mass of the atom B) contains most of the mass of the atom C) has no charge D) has a negative charge ...
... A) contains a small percentage of the mass of the atom B) contains most of the mass of the atom C) has no charge D) has a negative charge ...
•What makes up an atom? Draw an atom
... • Element - Pure substance that can’t be broken into other types of matter • Each element has its own symbol and specific number of protons ...
... • Element - Pure substance that can’t be broken into other types of matter • Each element has its own symbol and specific number of protons ...
AP Chemistry 2013 Semester 1 Final Exam Review Problems
... 16. The compound chloral hydrate, known in detective stories as knock-out drops, is composed of 14.52% C, 1.83% H, 64.30% Cl and 19.35% O by mass and has a molar mass of 165.4g/mol. a. What is the empirical formula of this substance? b. What is the molecular formula of this substance? c. Draw the L ...
... 16. The compound chloral hydrate, known in detective stories as knock-out drops, is composed of 14.52% C, 1.83% H, 64.30% Cl and 19.35% O by mass and has a molar mass of 165.4g/mol. a. What is the empirical formula of this substance? b. What is the molecular formula of this substance? c. Draw the L ...
Atomic Masses
... Atomic Masses The most accurate method of comparing masses of atoms is by using the mass spectrometer. The mass spectrometer knocks electrons off the atoms or molecules being analyzed and changes them into positive ions. An applied electric field then accelerates these ions into a magnetic field. An ...
... Atomic Masses The most accurate method of comparing masses of atoms is by using the mass spectrometer. The mass spectrometer knocks electrons off the atoms or molecules being analyzed and changes them into positive ions. An applied electric field then accelerates these ions into a magnetic field. An ...
Infrared Spectroscopy and Mass Spectroscopy
... • Amount of deflection depends on m/z. • The detector signal is proportional to the number of ions hitting it. • By varying the magnetic field, ions of all masses are collected and counted. => Chapter 12 ...
... • Amount of deflection depends on m/z. • The detector signal is proportional to the number of ions hitting it. • By varying the magnetic field, ions of all masses are collected and counted. => Chapter 12 ...
Atom (A) or Ion (I)
... 83. What is molarity? 84. If I have 2.5 mol of calcium carbonate in .30 L of solution, what is the molarity? 85. If I have 700.0 mL of a 5.0 M NaOH solution, how many grams of NaOH were used to make the solution? 86. What is meant by chemical equilibrium? 87. What factors affect the rate of a reacti ...
... 83. What is molarity? 84. If I have 2.5 mol of calcium carbonate in .30 L of solution, what is the molarity? 85. If I have 700.0 mL of a 5.0 M NaOH solution, how many grams of NaOH were used to make the solution? 86. What is meant by chemical equilibrium? 87. What factors affect the rate of a reacti ...
Lecture 5 (2.1-2.3)
... • Law of constant composition (Proust) – a pure compound always contains definite proportions (fractions) of its elements by mass Mass of element Mass of compound ...
... • Law of constant composition (Proust) – a pure compound always contains definite proportions (fractions) of its elements by mass Mass of element Mass of compound ...
General Chemistry - Review for final exam: (Make sure you bring
... 71. In the above reaction, NaCl + F2 NaF + Cl2, F is more or less reactive than Cl? 72. In the activity series of metals are the more reactive metals found on the top or the bottom of the chart? 73. What conditions in the reactants must be present in order for a double-replacement to take place? 7 ...
... 71. In the above reaction, NaCl + F2 NaF + Cl2, F is more or less reactive than Cl? 72. In the activity series of metals are the more reactive metals found on the top or the bottom of the chart? 73. What conditions in the reactants must be present in order for a double-replacement to take place? 7 ...
3rd Quarter Test
... a) forward reaction stops b) reverse reaction stops c) concentration of the reactants and the products becomes equal d) rates of the opposing reaction becomes equal 20) For a chemical system at equilibrium, a rise in temperature will a) favor the endothermic reaction b) favor the exothermic reaction ...
... a) forward reaction stops b) reverse reaction stops c) concentration of the reactants and the products becomes equal d) rates of the opposing reaction becomes equal 20) For a chemical system at equilibrium, a rise in temperature will a) favor the endothermic reaction b) favor the exothermic reaction ...
Properties of Metals vs. Nonmetals vs. Metalloids
... Refer to your class notes, worksheets, and the textbook to complete this review sheet. Study early so that you will have time to ask questions about what you don’t understand. Do not forget to use your study guide from the first quarter exam to also help you review for your semester final. If you do ...
... Refer to your class notes, worksheets, and the textbook to complete this review sheet. Study early so that you will have time to ask questions about what you don’t understand. Do not forget to use your study guide from the first quarter exam to also help you review for your semester final. If you do ...
Properties of Metals vs. Nonmetals vs. Metalloids
... Refer to your class notes, worksheets, and the textbook to complete this review sheet. Study early so that you will have time to ask questions about what you don’t understand. Do not forget to use your study guide from the first quarter exam to also help you review for your semester final. If you do ...
... Refer to your class notes, worksheets, and the textbook to complete this review sheet. Study early so that you will have time to ask questions about what you don’t understand. Do not forget to use your study guide from the first quarter exam to also help you review for your semester final. If you do ...
Symbol
... 16. Find the density of a block of wood with a mass of 25.00 g and a volume of 80.000 cm3 17. An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density? 18. ...
... 16. Find the density of a block of wood with a mass of 25.00 g and a volume of 80.000 cm3 17. An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density? 18. ...
Gas chromatography–mass spectrometry
Gas chromatography–mass spectrometry (GC-MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation, and identification of unknown samples. GC-MS can also be used in airport security to detect substances in luggage or on human beings. Additionally, it can identify trace elements in materials that were previously thought to have disintegrated beyond identification.GC-MS has been widely heralded as a ""gold standard"" for forensic substance identification because it is used to perform a specific test. A specific test positively identifies the actual presence of a particular substance in a given sample. A non-specific test merely indicates that a substance falls into a category of substances. Although a non-specific test could statistically suggest the identity of the substance, this could lead to false positive identification.