Chemistry
Chemistry, 11.07.2019 14:00, Chantamariepaul

Do you says there are pure substances are elements do you agree why or why not

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Biology, 11.07.2019 07:00, ineedhelp2285
Astudent says that all pure substances are elements. do you agree? why or why not? question 14 options: i agree. pure substances include only single atoms made of one element. i disagree. elements are not pure substances. all pure substances include only molecules and compounds, which are more complex. i disagree. elements form all pure substances, but some pure substances include elements bonded together to form molecules and compounds. i disagree. all pure substances are also mixtures.
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Chemistry, 11.07.2019 13:30, mecennabosaaen
a student says that all pure substances are elements. do you agree? why or why not? question 14 options: i disagree.  elements form all pure substances, but some pure substances include elements bonded together to form molecules and compounds.i disagree.  all pure substances are also mixtures.i disagree.  elements are not pure substances.  all pure substances include only molecules and compounds, which are more complex.i agree.  pure substances include only single atoms made of one element.
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Physics, 11.07.2019 14:00, rebtav
Question 14 unsaved a student says that all pure substances are elements. do you agree? why or why not? question 14 options: i disagree. all pure substances are also mixtures. i disagree. elements are not pure substances. all pure substances include only molecules and compounds, which are more complex. i agree. pure substances include only single atoms made of one element. i disagree. elements form all pure substances, but some pure substances include elements bonded together to form molecules and compounds.
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Biology, 19.09.2019 07:50, jamaiciaw6
Which of the following is a physical change? a newspaper burns when placed in a fire. an iron chair rusts when left outside. a sample of water boils and releases gas. a plant changes carbon dioxide and water into sugar. question 3(multiple choice worth 2 points) which of these statements best describes the relationship between elements, compounds, and pure substances? pure substances can be divided into two groups: elements and compounds. compounds can be divided into two groups: pure substances and elements. elements and pure substances are two of many different types of compounds. pure substances and compounds are two of many different types of elements.
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