in a heterogeneous mixture distillation: liquid is boiled to produce a vapor that is condensed into a liquid i.e.: separating water from other components in tap water 2.3 element simplest for mof matter that has a unique set of properties compound: subsgtance that contains two or more elements chemically combined in a fixed proportion chemical change: change that produces matter with a different composition than the original matter chemical symbol: each element represented by a one or
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Para-nitrobenzeneazoresorcinol dye and methyl orange belong to a class of dyes known as “azo colors” which contain the azo group linked to two aromatic nuclei. The nature of the aromatic substituent’s on both sides of the azo group (-N=N-) controls the colors of the azo compound as well as the water- solubility of dyes and how well they bind to a particular fabric. In addition to the azo group‚ the dyes
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The aim of this Lab Exercise is to use the mass of a chemical and use that mass to find the amount of moles of the final product you can get using the empirical formula. Introduction: The empirical formula of a compound is the simplest whole-number ratio of the elements in the compound‚ which as you will discover‚ is a ratio of the moles of those elements. “Empirical” also means “experimentally determined”. In this experiment‚ we find the empirical formula of the oxide of magnesium. We will accomplish
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Verb Dehumanize means to deprive of human qualities or attributes; divest of individuality. Etymology- De (not) + humanize (to make human) Dehydrate- Verb Dehydrate means to deprive (a chemical compound) of water or the elements of water. Etymology- De (not) + hydrate (presence of water in a compound or living object) Defrost- verb Defrost means to remove the frost or ice from an object. To melt an object from ice or frost to a liquid form. Etymology- De (undo) + frost (to freeze an object) Deescalate
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A scientist separated a mixture to obtain the specific substance that was in need. Many of the compounds and mixtures today are not found in its pure form‚ but in mixtures. Many scientists have the impression that separating mixtures is an important part of chemistry and modern academics. How can the components of mixture be separated and analyzed? Background Information: All elements and compounds are pure substances and they are categorized by having specific properties that are unique from other
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1. How much will $1000 deposit in savings account earning a compound annual interest rate of 6% be worth at the end of the following number years? a) 3 years $1‚191 b) 5 years $1‚338 c) 10 years $1‚791 2. If you require a 9% return on your investment which would you prefer? a) $5‚000 today PV = $5‚000 b) $15‚000 five years from today PV = $9‚748.50 c) $1‚000 per year for 15 years PV = $8061 Select option b
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MATTER AND CHANGE Name _____________________________________ PRACTICE PROBLEMS Period _________________ Date ______________ SECTION 2.1 MATTER 1. Which of the following is not a physical change? a. dissolving sugar in water b. burning gasoline in an engine c. evaporating sea water to obtain salt d. slicing a piece of bread 2. Which of the following is not a property of a gas? a. has a definite shape b. has no definite volume c. assumes the shape of
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weight boat (lid) Procedure: 1. Measure the mass of a beaker‚ 10mL vinegar‚ and 10g baking soda. 2. Mix the compounds in the beaker and wait for the reaction to finish. 3. Record the mass of the beaker and its contents. 4. Determine the remaining mass of the chemicals in the beaker. 5. Measure the mass of a new beaker‚ a plastic weight boat‚ 10mL vinegar‚ and 10g baking soda. 6. Mix the compounds in the beaker‚ and immediately place the plastic boat over the beaker so that it acts as a lid‚ and wait
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techniques used to isolate and purify has been by extraction‚ distillation‚ recrystallization‚ and chromatography. In this experiment we will be trying to obtain a pure organic compound from a natural source. Because this natural source it is not only trimyristin and myristic acid that makes it up‚ it’s a mixture of many compounds. Although nutmeg is one of those natural sources that trimyristin is easily extracted from it does take some time to achieve in lab. Ground nutmeg seeds are extracted with methyl
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Interest and Exponential Growth) The Compound Interest Equation P = C (1 + r/n) nt where P = future value C = initial deposit r = interest rate (expressed as a fraction: eg. 0.06) n = # of times per year interest is compounded t = number of years invested Simplified Compound Interest Equation When interest is only compounded once per year (n=1)‚ the equation simplifies to: P = C (1 + r) t Continuous Compound Interest When interest is compounded
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