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 |