Chapter 5
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| Special Cases worksheet |
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| CaSO4'2H2O is a (n) ----------- because it always contains a fixed ratio of water molecules to calcium and sulfate ions. | Hydrates
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| A chemist can often use the process of ---------- to separate two liquids from each other. | Distillation
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| Any compound that contain carbon is generally classified as | Organic
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| Sodium carbonate is a (n) --------- substance because it takes on water molecules to become chemically bonded. | Hydroscopic
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| Oxygen and ozone are -------- or different forms of the same elements. | Allotropes
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| When copper sulfate pentahydrate is heated, water is driven off, leaving behind ------------copper sulfate. | Anhydrous
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| Methane and propane are example of ---------- because they contain only carbon and hydrogen. | Hydrocarbons
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| If left outside on the table for an extended period of time, a (n) ------------- substance such as calcium chloride, will take on enough water to form a liquid solution. | deliquescent
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| In general, compound that do not contain carbon are classified as --------- | Inorganic
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| Table salt sometimes become damp as it absorbs water from the air, indicating that table salt is --------- substance. | Hydroscopic
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| A(n) -------- substance takes up so much water from the air that it forms a liquid solution. | deliquescent
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| Which of the following compounds can be used as a drying agent? | Hydroscopic alum
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| In order to separate two liquids from each other by distillation, they must---. | evaporate at different temperature
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| when the dehydrate of calcium chloride is heated gentely, it loses one molecules of water of hydration. write the formulas for the initial and final compound in this change. | Initial: Ca-Cl2'H2O
Final: Ca-Cl2-H2O
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| When copper sulfate is used as a desiccant, it takes on five molecules of water of hydration. write the formulas for the initial and final compound in this change. | Initial: Cu-So4
Final: Cu SO4'5H2O
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| Write the formulas for sodium sulfate dehydrate and its anhydrous form. | Hydrate: Na2SO4'10H2O
Anhydrous: Na 2SO4
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| write the name and formula for any binary acid. | HCL Hydrochloride
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| The charge on an ion is the same as the --------- of that ion. | Oxidation number
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| A compound consisting of two elements is called a (n) | Binary compound
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| A (n) -------- is an ion containing more than one element. | Polyatomic
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| The "H2O" portion of the formula BaCl2.H2O indicates that this compound is a a (n) . | Hydrate
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| Table salt sometimes become damp as it absorbs water from the air, indicating that table is a (n) -------- substance. | Hydroscopic
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| A (n) -------- substance takes up so much water from the air that it forms a liquid solution. | deliquesant
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| When hydrate copper sulfate is heated, it loses its water of hydration and become ------ copper sulfate. | anhydrous
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| A (n) ------ is the combination of the chemical symbols that represent the simplest possible ratio of ions in a compound. | formula
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| Magnesium bromide (MgBr2) is one of the most abundant compounds found in sea water. From its formula, answer the following question about this compound. | nothing
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| What is the oxidation number of each ion in the compound? | +2,-1
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| what would be the formula for the dehydrate of magnesium bromide? | MgBr2.2H2O
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| How would express the following, using chemical symbol: "three formula units of magnesium bromide"? | 3Mg Br2
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| In the chemical formula for a binary ionic compound, the second elements is a. | nonmetals
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| Trues | False
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| Nacl | true
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| AlF3 | true
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| K3Po4 | true
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| CaNo3 | Ca (NO3)2 false
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| BaCl2, 2H2O | Bacl2'2H2OEalse
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| FL i | false Li F
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| MgSO4 | true
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| Ca2C2H3O2 | Ca (cH3 coo)2
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| K2Cr2O7 | true
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| Mg I | MaI2
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| Colum a | Colum b
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| Describe molecular substance | covalent bond
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| Example of allotropes | oxygen and ozone
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| Describes organic compounds | contain carbon
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| Simplest hydrocarbon | methane
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| Common inorganic compounds | water
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| Name | Formula
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| Calcium hydroxide | Ca(OH)2
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| Sulfuric acid | H2so4
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| Ammonia | NH3
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| Sulfur dioxide | SO2
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| Sodium dioxide | NA2O
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| Carbon tetrachloride | CCL4
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| phosphorus pentoxide | P2O5
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| Hydrochloric acid | HCL
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| Octane | C8H18
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| Iron3 bromide | FeBr3
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| Elements | Oxidation number
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| Na | +1
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| Mg | +2
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| Al | +3
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| S | _2
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| Cl | _1
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| What is a formula unit? | The simplest ratio of ion in an ionic compound.
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| What is a molecule? | An uncharged group of two or more atoms held together by covalent bonds.
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| Correct formula unit of magnesium chloride? | MgCl2
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| What is the correct formula for a compound that results from element A, which has 1 valence electron and element B. which has 6 valence electron? | A2B
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| What happens to the composition of a hydrate when it is heated? | It loses water to become an hydrous.
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| Compound | Name
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| Ca(C2H3O2)2 | calcium acetate
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| NaOH | Sodium hydroxide
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| (NH4)2SO3.H2O | Ammonium sulfite monohydrate
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| MgSO4 | Magnesium Sulfate
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| NaNO | Sodium Nitrate
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| Ca(OH)2 | Calcium Hydroxide
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