Term
Attractions between polar molecules are stronger than attractions between non-polar molecules
true or false |
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Definition
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Term
| What attractions hold atoms together in a covalent bond? |
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Definition
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Term
| The properties of an ionic compound can be explained by the strong attractions between a ________ _______ |
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Definition
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Term
| What ionic compound includes at least one metal? |
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Definition
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Term
| How are atoms held together in a covalent bond? |
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Definition
| with a nuetral charge containing a balanced charge of protons and electrons |
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Term
| can you assume that a molecule that coontains a polar covalent bond is polar? |
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Definition
| if a molecule has 2 atoms it will be polar. |
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Term
| which attraction is stronger non-polar molecules or polar molecules? |
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Definition
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Term
| When are roman numerals used in compound names? |
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Definition
| When a metal forms more than 1 ion, the name contains roman numerals to indicate the charge on the ion. |
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Term
| A covelently bonded group of atoms that has a positive or negative charge and acts as a unit is __________ ____ |
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Definition
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Term
| Can scientist design alloys? |
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Definition
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Term
During chemical reactions, the mass of the products is always equal to the mass of reactants?
T or F |
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Definition
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Term
| What is the first step in balancing an equation? |
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Definition
| count the number of atoms |
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Term
| What is the mole formula? |
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Definition
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Term
| who are reactions often classified? |
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Definition
| By the the type of reactants, number of reactants and products. |
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Term
| What is a synthesis reaction ? |
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Definition
| when 2 or more substances react from a single substance |
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Term
| what are five general type of reactors? |
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Definition
| chemical reactions, synthesis reaction, descomposition reactions, single-replacement reactions, double-replacement reactions, and combustion reactions. |
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Term
| Does breaking a chemical bond require energy or release energy? |
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Definition
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Term
| What affects reaction rates? |
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Definition
| surface, temperature, concentration, stirring, and catalyst. |
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Term
| What happens during a chemical equilibrium? |
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Definition
| a state that the forward and reverse paths of a change take place at the same rate. |
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Term
| What would happen if you increased temperature of a system that contained nitrogen, hydrogen, and amonia? |
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Definition
| If you added heat to the system the equilibrium would shift in the direction that removes heat from the system |
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