Stg Questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The primary motivation behind Chemistry is to:a. develop new productsb. make moneyc. understand an environmental problemd. gain knowledge | d. gain knowledge
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| Applied Chemistry or chemical technology is designed to:a.solve a particular problemb. develop new productsc. gain knowledged. learn for the sake of learning | a. solve a problem
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| chemistry is:a. a biological scienceb. a physical sciencec. concerned mostly with living thingsd. the study of electricity | b. physical science
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| briefly define the five branches of chemistry | organic-study of carbon substancesinorganic-study of non carbon substamcesphysical- study of the behavior of chemical energy and matteranalytical- composition of substancesbiochemistry- study ofliving organisms
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| Physical or chemical change:a ice meltingb paper burningc milk souringd gas under pressuree liquid evaporatingf food digestingg leaves changing color | a.physicalb.chemicalc. physicald. physicale. chemicalf physicalg physical
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| mass and matter | mass the amount of matter an object containsmatter any thing that has mass and takes up space
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| element and compound | element building block compound combination of two or more elements
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| pure substance | matter that has uniform and definite composition
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| physical and chemical property | physical can be observed or measured without changing the substance compositionchemical substance undergos a chemical reaction and to form a new substance
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| homo and heter mixtures | homo can only see one hetero can see both or all
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| extensive | depends on the amoutn of matter that is present volume mass energy
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| intensive | does not depend on the amoutn of matter that is present melting point boiling point density
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