Molality Teacher Resources
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Sixty multiple-choice questions test on a variety of first year chemistry subjects. In order to succeed, exam takers must be competent with properties of elements, stoichiometry problems, gas laws, bond dissociation, and types of reactions. A page is provided that displays a comprehensive chart of abbreviations and symbols, constants, and the periodic table. Also, an answer key is provided for teachers. This is a top-notch exam!
Only eight problems are on this competitive national chemistry exam. It required the balancing of chemical equations, solving stoichiometry questions, and more. This is part two of three of the national exam. Also available is a local pre-competition exam. All of these resources are well-written and neatly formatted tests that you can use in your general chemistry curriculum or as preparation practice for the National Chemistry Olympiad.
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of chemistry curriculum. Topics include, but are not limited to pH, molecular geometry, bonding, behavior of gases and solutions, phase changes, and chemical reactions. Use this as a final exam or as a practice for those who want to enter the nation-wide challenge.
Chemists consider a situation in which an ethanol producer needs to determine how much to add to t-butanol to prevent freezing during transport. They work in the laboratory to obtain the freezing point depression constant for the t-butanol. They graph the temperature changes and answer questions on the provided lab sheet. This is an outstanding application of freezing point concepts to a real-life scenario.
In this National Chemistry Olympiad test, junior chemists answer eight problem solving questions on a variety of topics. These include calculating molarity of solutions, determining rates of reactions, calculating decay and discussing topics such as electrolysis.
In this chemistry worksheet, students examine the given concept in order to apply in the laboratory setting. The sheet includes in depth background information.
In this chemistry exam worksheet, students solve 11 problems including topics such as writing equations, solving for unknown values, calculating formulas, and finding the density and reaction rates of solutions.
For each of the eight solutions, there are are number of questions about their concentration, molarity, or solubility curve.
Students conduct an oxidation experiment in which they must determine how much hydrogen peroxide (H2O2) is actually in a store-bought solution of H2O2.
Students predict changes in freezing and boiling points of water, given type and quantity of solute added. They solve word problems for changes to boiling points and freezing points of solutions based upon data supplied. They describe and discuss the evolution of glass making through the ages.
In this chemistry worksheet, students examine the concept of solubility of silver chloride. The sheet has in depth concept and laboratory instructions.
In this stoichiometry worksheet, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This worksheet has 18 word problems.
In this chemistry activity, test takers answer 60 multiple choice questions on topics related to chemistry from balancing equations to calculating moles and molecules of compounds. They name formulas, they convert, they solve problems on topics such as redox reactions, gas laws and chemical structure.
In this National Olympiad Exam activity, students answer sixty multiple choice questions including topics such as atomic structure, problem solving, thermodynamics, acids and bases and solutions.
National Chemistry Olympiad tests are released after their use each year, since they cannot use them again for this event. The result: outstanding comprehensive assessment resources for general chemistry classes! This 2005 version covers an abundant array of topics and skills and it requires both critical thinking and problem solving to complete. An answer key is provided for your convenience.
In this phase change worksheet, students answer twenty questions about boiling points, specific heat and enthalpy, vapor pressure, osmotic pressure, miscibility and solubility.
In this phase change worksheet, students solve twenty problems related to energy changes in solutions. Students answer questions about phase diagrams, the effects of pressure changes on a system, miscibility, boiling points and vapor pressure.
In this phase change instructional activity, students answer twenty questions about changes in energy to a system. They analyze phase diagrams, the determine the effects of changes in temperature on a system, they answer questions about miscibility, vapor pressure, osmotic pressure and solubility.
A series of complicated reactions that ask young chemists to give equations or calculate molarities and freezing points of certain concentration solutions. An excellent review sheet combining manipulation of concepts and math skills.
If your pupils need more practice with equations and solutions, the questions here will help. A mixture of reactions, as well as calculations of moles and masses is required. The complicated word problems and data will activate pupil's knowledge and critical-thinking skills.