Term
| How do you write a word equation? |
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Definition
| to write a word equation, write the names of the arrow separated by plus signs; write the names of the products to the right of the arrow, also separated by plus signs. |
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Term
| How do you write a skeleton equation? |
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Definition
| write the formulas of the reactants to the left of the yield sign (arrow)and the formulas of the products to the right. |
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Term
| What are the steps in writing a balanced chemical equation? |
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Definition
| to write a balanced chemical equation, first write the skeleton equation. Then use coefficients to balance the equation so that it obeys the law of conservation of mass. |
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Term
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Definition
| a representation of a chemical reaction; the formulas of the reactants (on the left) are connected by an arrow with the formulas of the products (on the right). |
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Term
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Definition
| a chemical equation that does not indicate the relative amounts of the reactants and products. |
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Term
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Definition
| a substance that speeds up the reaction but is not used up in the reaction. |
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Term
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Definition
| small whole numbers that are placed in front of the formulas in an equation in order to balance it. |
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Term
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Definition
| each side of the equation has the same number of atoms of each element and mass is conserved. |
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Term
| What are the five general types of reactions? |
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Definition
| the five general types of reactions are combination, decomposition, single-replacement, double-replacement, and combustion. |
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Term
| How can you predict the products of the five general types of reactions? |
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Definition
| the number of elements and/or compounds reacting is a good indicator of possible reaction type and thus possible products. |
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Term
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Definition
| a chemical change in which two or more substances react to form a single new substance. |
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Term
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Definition
| a chemical change in which a single compound breaks down into two or more simpler products. |
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Term
| Single-replacement reaction |
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Definition
| a chemical change in which one element replaces a second element in a compound. |
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Term
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Definition
| a list of elements in order of decreasing activity. |
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Term
| Double-replacement series |
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Definition
| a chemical change involving an exchange of positive ions between two compounds. |
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Term
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Definition
| a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat or light. |
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Term
| What does a net ionic equation show? |
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Definition
| a net ionic equation shows only those particles involved in the reaction and is balanced with respect to both mass and charge. |
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Term
| How can you predict the formation of a precipitate in a double-replacement reaction? |
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Definition
| you can predict the formation of a precipitate by using the general rules for solubility of ionic compounds. |
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Term
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Definition
| an equation that shows dissolved ionic compounds as dissociated free ions. |
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Term
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Definition
| an ion that appears on both sides of an equation and is not directly involved in the reaction. |
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Term
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Definition
| an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change. |
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