TOPGRADE

Chemistry Elements Study Review Practice Test. H - CORRECT ANSWER Hydrogen He - CORRECT ANSWER Helium Li - CORRECT ANSWER Lithium Be - CORRECT ANSWER Beryllium B - CORRECT ANSWER Boron C - CORRECT ANSWER Carbon N - CORRECT ANSWER Nitrogen O - CORRECT ANSWER Oxygen F - CORRECT ANSWER Fluorine Ne - CORRECT ANSWER Neon Na - CORRECT ANSWER Sodium Mg - CORRECT ANSWER Magnesium

Chemistry Thermochemistry Study Guide Test. The specific heat of iron metal is .450 J/g-K. How many J of heat are necessary to raise the temperature of a 1.05 kg block of iron from 25C to 88.5C? - CORRECT ANSWER (.450) (1050) (63.5) = 30,000.75 J/g How much heat energy, in Joules, is absorbed when 150 grams of water is warmed from 34.8C to 96.3C? - CORRECT ANSWER (150) (4.184) (61.5) = 38,597.4 J/g A chunk of silver has a heat capacity of 42.8J/C. If the silver has a mass of 181 grams...

Introduction to Chemistry Practice Exam Questions Correctly Answered. Atom - CORRECT ANSWER Smallest particle of matter proton - CORRECT ANSWER positive particle in the nucleus. electron - CORRECT ANSWER negative particle in an atom. Is found in the space surrounding the nucleus of an atom neutron - CORRECT ANSWER neutral particle in the nucleus element - CORRECT ANSWER a substance containing only one type of atom. Egs. Hydrogen, Helium, Lithium compound - CORRECT ANSWER two ...

The Nature of Chemistry Study Guide Exam. A high school class is discussing whether a particular discovery in chemistry has had a positive impact on society. Which question is the most important for the students to answer? - CORRECT ANSWER How have people and the environment been affected by the discovery? Which is an example of pseudoscience? - CORRECT ANSWER use of astrology to predict the personality of a child The nutrition label on rice lists the amounts of proteins, carbohyd...

IGCSE Chemistry- Organic Chemistry Practice Exam Questions & Answers. Molecular formula for methane - CORRECT ANSWER CH4 Molecular formula for ethane - CORRECT ANSWER C2H6 Molecular formula for propane - CORRECT ANSWER C3H8 Molecular formula for butane - CORRECT ANSWER C4H10 Molecular formula for pentane - CORRECT ANSWER C5H12 General formula for alkanes - CORRECT ANSWER CnH2n+2 Structural formula for methane - CORRECT ANSWER CH4 Structural formula for ethane - CORRECT ...

Chemistry II Final Exam Study Guide Test. Which of the following is not a solution? Select the correct answer below: air an alloy of zinc and copper a mixture of oil and water potassium permanganate dissolved in water - CORRECT ANSWER a mixture of oil and water Oil and water are immiscible liquids, meaning they will not form a homogeneous mixture when added together. Therefore, a mixture of oil and water will not be a solution. Air is a gaseous solution: a homogeneous mixture of nitro...

Chemistry Nomenclature Study Guide Test. calcium iodide - CORRECT ANSWER CaI2 magnesium nitrate - CORRECT ANSWER Mg(NO3)2 iron(II) acetate - CORRECT ANSWER Fe(C2H3O2)2 lead(IV) oxide - CORRECT ANSWER PbO2 calcium hydride - CORRECT ANSWER CaH2 copper(II) sulfide - CORRECT ANSWER CuS hydrogen sulfide (g) - CORRECT ANSWER H2S magnesium nitrate - CORRECT ANSWER MgNO3 iron(II) acetate - CORRECT ANSWER Fe(C2H3O2)2 calcium iodide - CORRECT ANSWER CaI2 calcium hydride ...

Chemistry Chapter 1 Introduction to Chemistry Exam Questions & Answers. Matter - CORRECT ANSWER Anything that has mass and occupies space Chemistry - CORRECT ANSWER The study of the composition of matter and the changes that matter undergoes Organic Chemistry - CORRECT ANSWER The study of all chemicals containing carbon Inorganic Chemistry - CORRECT ANSWER Study of chemicals that in general do not contain carbon Bio Chemistry - CORRECT ANSWER The study of processes that take pla...

GCSE AQA Chemistry- Organic Chemistry Study Guide Test. How is crude oil formed? - CORRECT ANSWER Over millions of years from the fossilised remains of plankton Where is crude oil found? - CORRECT ANSWER In the porous rocks in the Earth's crust Is crude oil renewable or non-renewable? - CORRECT ANSWER Non-renewable What is crude oil made up of? - CORRECT ANSWER Hydrocarbons What gives hydrocarbon molecules varying properties? - CORRECT ANSWER They vary in size What happens t...

Chemistry – Liquids Study Guide Test Correctly Answered. Which of these observations are not explained by kinetic-molecular theory? --When a gas is heated, it expands. --At very low temperatures, gases expand less for a given pressure change than they do at high temperatures. --If the volume of a gas decreases, its pressure increases at constant temperature. --When gas is added to a rigid container, the pressure inside the container increases - CORRECT ANSWER At very low tempe...

General Chemistry Final Exam Questions Correctly Answered. Atomic Number vs mass number vs. atomic mass vs. atomic weight vs. molecular weight - CORRECT ANSWER atomic number-Z=protons mass number- A=sum of protons and neutrons -atomic mass: mass number ^^ -atomic weight: weighted average of naturally occurring isotopes (12.011) -molecular weight: add up the atomic weights of each element in a compound subatomic charges aka charge of an electron - CORRECT ANSWER e= 1.6 x 10^-19 1 ele...

AP Chemistry Review Practice Test. isotope - CORRECT ANSWER element with a different number of neutrons mass spectrometry - CORRECT ANSWER mass of various isotopic elements to create a mass spectrum graph avogadros number - CORRECT ANSWER 6.022 E23 ? L/mol - CORRECT ANSWER 22.4 L empirical formula - CORRECT ANSWER simplest ratio of the molecules making up a compound molecular formula - CORRECT ANSWER actual formula for a substance coulombs law - CORRECT ANSWER the amount o...

Chemistry Stuff Study Guide Test. Select all the statements that correctly describe matter. - CORRECT ANSWER - Matter is anything that occupies spaces and has mass. - Matter can include both large objects and small objects. Select all the statements that correctly describe mass and/or weight. - CORRECT ANSWER - Weight can be measured on a scale or balance. - The interaction of mass with gravity creates weight. True or false: all samples of a given pure substance have the same com...

Chemistry 1307 Review Exam Questions and Answers. J.J. Thomson used ______ to measure the ______ of a cathhode ray particle - CORRECT ANSWER Magnetic and electric fields, mass-to-charge ratio Thomson's experiements are important becaue they showed that the atom _____ is clearly compsoed of ______. - CORRECT ANSWER atom, smaller particles

Chemistry Safety Exam Questions & Answers. How would you write the conversion reaction from oil to biodiesel? - CORRECT ANSWER oil+alcohol+catalylist->biodisiesel+glycerol+catalyst Which of the following hazards does not apply for methanol? - CORRECT ANSWER Oxidizing Which P-sentence indicated why you should work in the fun hood when using methanol? - CORRECT ANSWER Do not breathe mist, vapours, spray Use only outdoors or in a well ventilated area What is the boiling point of m...

Physics and Chemistry Complete Study Guide Test. Which is a characteristic of mixtures? D IS ANSWER - CORRECT ANSWER A>They are chemically bonded together. B>They can be classified as pure substances. C>They have fixed ratios between their components. D>They can be separated by physical processe The chemical formula for emerald is Be3Al2(SiO3)6. An emerald can be described as ANSWER A - CORRECT ANSWER A>a pure substance because it is a compound. B>a pure substance...

Chemistry 1151 Practice Exam Questions & Answers. Ruler showing a bit past 15.5 - CORRECT ANSWER 15.60 What is the abbreviation for the element? Silver Fluorine Iron Phosphorus Sodium - CORRECT ANSWER Ag F Fe P Na What is the mass of the solid sample? Mass of weigh boat: 1.679g Mass of weigh boat and sample: 6.477g - CORRECT ANSWER 6.477-1.679= 4.798 Calculate the volume of a box which is 125 cm long, 37 cm wide, and 68 cm high. Report your answer with correct s...

Organic Chemistry Complete Study Guide Test. Alkane - CORRECT ANSWER a hydrocarbon containing only single covalent bonds Alkene - CORRECT ANSWER Alkyne - CORRECT ANSWER Alcohol - CORRECT ANSWER Ether - CORRECT ANSWER Ester - CORRECT ANSWER Amine - CORRECT ANSWER Aldehyde - CORRECT ANSWER Ketone - CORRECT ANSWER An organic compound with a carbonyl group of which the carbon atom is bonded to two other carbons. Alkoxy - CORRECT ANSWER is an -OR group, an alkyl...

Chemistry: Calorimetry Exam Questions & Answers. calorie - CORRECT ANSWER a unit of energy equal to 4.18 J calorimeter - CORRECT ANSWER a device used to measure the heat absorbed or evolved during a physical or chemical change calorimetry - CORRECT ANSWER the use of a calorimeter to measure energy given off or absorbed during a physical or chemical process heat capacity - CORRECT ANSWER the quantity of heat needed to raise the temperature of a given sample of a substance by one deg...

The Mole Chemistry Study Guide Exam Questions Correctly Answered. why chemists use the mol - CORRECT ANSWER Chemists use the mole because it is a convenient way of knowing how many representative particles are in a sample. State the mathematical relationship between Avogadro's number and 1 mol. - CORRECT ANSWER One mole contains 6.02 10 particles List the conversion factors used to convert between particles and moles. - CORRECT ANSWER 6.02 1023 representative particles ____ 1 mol , 6...