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[DOC File]Math Review for Chemistry
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Example: Italian dressing, concrete, soil, chocolate chip cookie. Hetero = opposite. HOMOGENEOUS MIXTURE (uniform throughout—distinct pattern) Example: saltwater, iced tea. Homo = same. ELEMENT (simplest form of matter) Example: Na, Cl2. COMPOUND or MOLECULE (2+ different elements chemically combined) Example: NaCl (table salt), H2O (water ...
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[DOC File]The Nuts and Bolts Lab: A Study of the Classification of ...
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Using elements, compounds or both, create a homogeneous mixture and a heterogeneous mixture and explain your reasoning for each. Air that you breathe is a mixture of gases, by volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% Ar or argon, 0.039% CO2 or carbon dioxide, and variable amount of water vapor, on average around 0.4% over ...
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[DOC File]Chemistry SOL Review Packet
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Example: the formula for magnesium nitrate is written Mg(NO3)2 to show that there is a ratio of one magnesium atom, 2 nitrogen atoms and 6 oxygen atoms in the compound. 2.3 Elements in groups 1, 2 and 13 (metals) will lose electrons and form positive ions. Elements in groups 15, 16 and 17 will gain electrons and form negative ions.
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[DOCX File]Chemistry | University of Missouri
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When samples of these are decomposed, the sulfur dioxide produces 3.49 g oxygen and 3.50 g sulfur, while the sulfur trioxide produces 6.75 g oxygen and 4.50 g sulfur. Calculate the mass of oxygen per gram of sulfur for each sample and show that these results are consistent with the law of multiple proportions.
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PHYSICAL SCIENCE STUDY GUIDE: CHAPTERS 1-7
Write the complete answers, not just the letter. See question 50 as an example. This study guide is . worth 15 extra credit points on the midterm exam and is . due on . ... The majority of elements in a periodic table are. ... The compound ____ is an example of an ionic compound. The chemical formula for calcium chloride is. All organic compounds.
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[DOC File]Chemistry Lecture ’93 B
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molar mass of the compound x 100% compound = = % element. total percent of all elements in a compound equals 100% (check) example: hydrate - a solid compound containing a definite percentage of . bound water. sodium carbonate decahydrate na2co3 . 10h2o . formula weight na2co3 . 10h2o . 2 x na = 2 x 23 = 46 amu
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[DOC File]STUDENT STUDY GUIDE FOR 8TH GRADE CHEMISTRY
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Elements in these groups would have similar chemical properties. For example, all of the elements in VIIIA have filled outer shells – the maximum number of electrons that can go into these shells. This is a stable configuration, so these elements are not very reactive. These elements are called the Nobel Gases or Inert Gases.
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[DOC File]Moles Class Packet Unit 2
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These compounds have a polyatomic ion, which is an ion that has a few elements grouped together with only one charge between them. A common example is OH- which shows two elements with an overall charge of -1. As before, name the first element completely and then look up the rest of the compound on table E of the reference tables.
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50 example of compound elements