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Chemistry
Chapter 5
| Question | Answer |
|---|---|
| Special Cases worksheet | |
| CaSO4'2H2O is a (n) ----------- because it always contains a fixed ratio of water molecules to calcium and sulfate ions. | Hydrates |
| A chemist can often use the process of ---------- to separate two liquids from each other. | Distillation |
| Any compound that contain carbon is generally classified as | Organic |
| Sodium carbonate is a (n) --------- substance because it takes on water molecules to become chemically bonded. | Hydroscopic |
| Oxygen and ozone are -------- or different forms of the same elements. | Allotropes |
| When copper sulfate pentahydrate is heated, water is driven off, leaving behind ------------copper sulfate. | Anhydrous |
| Methane and propane are example of ---------- because they contain only carbon and hydrogen. | Hydrocarbons |
| 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 |
| In general, compound that do not contain carbon are classified as --------- | Inorganic |
| Table salt sometimes become damp as it absorbs water from the air, indicating that table salt is --------- substance. | Hydroscopic |
| A(n) -------- substance takes up so much water from the air that it forms a liquid solution. | deliquescent |
| Which of the following compounds can be used as a drying agent? | Hydroscopic alum |
| In order to separate two liquids from each other by distillation, they must---. | evaporate at different temperature |
| 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 |
| 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 |
| Write the formulas for sodium sulfate dehydrate and its anhydrous form. | Hydrate: Na2SO4'10H2O Anhydrous: Na 2SO4 |
| write the name and formula for any binary acid. | HCL Hydrochloride |
| The charge on an ion is the same as the --------- of that ion. | Oxidation number |
| A compound consisting of two elements is called a (n) | Binary compound |
| A (n) -------- is an ion containing more than one element. | Polyatomic |
| The "H2O" portion of the formula BaCl2.H2O indicates that this compound is a a (n) . | Hydrate |
| Table salt sometimes become damp as it absorbs water from the air, indicating that table is a (n) -------- substance. | Hydroscopic |
| A (n) -------- substance takes up so much water from the air that it forms a liquid solution. | deliquesant |
| When hydrate copper sulfate is heated, it loses its water of hydration and become ------ copper sulfate. | anhydrous |
| A (n) ------ is the combination of the chemical symbols that represent the simplest possible ratio of ions in a compound. | formula |
| 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 |
| What is the oxidation number of each ion in the compound? | +2,-1 |
| what would be the formula for the dehydrate of magnesium bromide? | MgBr2.2H2O |
| How would express the following, using chemical symbol: "three formula units of magnesium bromide"? | 3Mg Br2 |
| In the chemical formula for a binary ionic compound, the second elements is a. | nonmetals |
| Trues | False |
| Nacl | true |
| AlF3 | true |
| K3Po4 | true |
| CaNo3 | Ca (NO3)2 false |
| BaCl2, 2H2O | Bacl2'2H2OEalse |
| FL i | false Li F |
| MgSO4 | true |
| Ca2C2H3O2 | Ca (cH3 coo)2 |
| K2Cr2O7 | true |
| Mg I | MaI2 |
| Colum a | Colum b |
| Describe molecular substance | covalent bond |
| Example of allotropes | oxygen and ozone |
| Describes organic compounds | contain carbon |
| Simplest hydrocarbon | methane |
| Common inorganic compounds | water |
| Name | Formula |
| Calcium hydroxide | Ca(OH)2 |
| Sulfuric acid | H2so4 |
| Ammonia | NH3 |
| Sulfur dioxide | SO2 |
| Sodium dioxide | NA2O |
| Carbon tetrachloride | CCL4 |
| phosphorus pentoxide | P2O5 |
| Hydrochloric acid | HCL |
| Octane | C8H18 |
| Iron3 bromide | FeBr3 |
| Elements | Oxidation number |
| Na | +1 |
| Mg | +2 |
| Al | +3 |
| S | _2 |
| Cl | _1 |
| What is a formula unit? | The simplest ratio of ion in an ionic compound. |
| What is a molecule? | An uncharged group of two or more atoms held together by covalent bonds. |
| Correct formula unit of magnesium chloride? | MgCl2 |
| 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 |
| What happens to the composition of a hydrate when it is heated? | It loses water to become an hydrous. |
| Compound | Name |
| Ca(C2H3O2)2 | calcium acetate |
| NaOH | Sodium hydroxide |
| (NH4)2SO3.H2O | Ammonium sulfite monohydrate |
| MgSO4 | Magnesium Sulfate |
| NaNO | Sodium Nitrate |
| Ca(OH)2 | Calcium Hydroxide |
Created by:
awais.jat
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