Master Chemistry with Fun Quizzes & Brain Teasers!

kinetic or potential energy.
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when moving down a column in the periodic table, which of the following increasesA. atomic massB. atomic numberC. group numberD. atomic mass and atomic number
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watch the truck and ladder animation. what is another name for newton's first law
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The simple unit of a compound
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How might the government make sure scientist research is done in an ethical way?
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What is an open system?OA. A system that allows energy and mass to move in and out of itB. A system that allows mass to move in and out but not energyOC. A system that does not allow energy or mass to move in or out ofitO D. A system that allows energy to move in and out but not mass
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What is the correct chemical formula for Fe3+ and P3-
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Read the scenario, and then answer the question that follows. Randy is the chief technology officer of a growing company. The company he works for is considering their software needs. The company currently has a few licenses for a proprietary software solution, but will need to greatly expand their operations quickly. The company has asked Randy to recommend a software solution that will allow the companys engineers to customize the software to fit the specific functions and duties of the companys employees, and to cheaply expand their operations to other office branches. Which of the following options would best fit Randys needs?
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Use the periodic table in the tools bar to complete the electron configurations for the following elements:Lithium (Li): 1sA2sBA = B =
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Iron is the mostabundant metalfound on EarthA. FirstB. SecondC. ThirdD. Fourth
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is Mixing baking soda and vinegar a endothermic chemical reaction
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When you open the door to your house on a cold day, you feel a cold draft. What causes this?
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what is density?????? any help anyone
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A hypothetical element consists of four isotopes. Use the information below to calculate the average atomic volume mass of the element. Work must be shown for credits to be given.
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A Boron atom has 5 protons, 6 neutrons, 2 electrons, and a mass of 11. Select 2 that apply. a+ 2 charge b+ 3 charge celectrons were lost delectrons were gained ezero charge
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4. The periodic table is organized into groups and periods of elements. The pointcharacteristics of a certain group of elements are listed below. Which ofthese elements is in this group?*Characteristics of a Group of Elements Is shiny Is solid at room temperature Has atoms with two valence electronsO A LithiumO B. StrontiumO C. AluminumO D. Silicon
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basically everything is in the picture, and i dont really understand please help.
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Please help I need help fast please
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Which pure substance can be classified as an element?H2NO3NaClH2SO4
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okay another question from my test Im almost done sorry for spamming I just gave up on that class because Im pretty sure it cant get worst :D
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A marble has a density of 11 g/cm3 and when dropped in a graduated cylinder increases the water level from 2 mL to 4 mL of volume. What is the mass of the marble in grams?
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1 pointA student is classifying a group of unknown solids by whether or not they float or sink in water.Which property is the student using to classify the solids?masssolubilitydensitymelting point
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What tool would you use to test for hardness?
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QuestionsVacuoles are round organelles found in both plant and animal cells. Their primary function is to -produce food and energy for the cell.control the activities of the cell.transport materials between parts of the cell.Ostore water, waste, and nutrients for the cell.
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