Chemical Reactions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is balance? | Occurs when the number and type of atoms on the reactant's and product's sides of a chemical equation are equal.
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| What is chemical change? | A change in substance that involves the breaking and reforming of chemical bonds to make new substance or substances.
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| what is chemical equation? | Chemical formulas and symbols that represents a chemical reaction.
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| What is chemical reaction? | The breaking of bonds to form a new substances(called the products).
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| What is coefficient? | A number placed in front of a chemical formula to make the number of atoms on each side of a chemical equation equal.
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| What is conservation of atoms? | Principle that states the number of each type of atom on the reactant's side must be equal to the number of each type of atom on the product's side of a chemical equation.
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| What is conservation of mass? | x
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| What is excess reactant? | A reactant that is not completely used up.
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| What is limiting reactant? | The reactant thaqt is used up first in a chemical reaction.
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| What is percent yield? | The actual yield of product in a chemical reaction divided by the predicted yield, and multiplied by one hundred to get a percentage.
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| What is physical change? | A change in the physical properties of a substancee.
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| What is polymer? | a large molecule that is composed of repeating smaller molecules called subunits or monomers.
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| What is product? | Substances that are produced in a chemical reaction from reactants.
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| What is reactant? | A substance that enters into and is altered in the course of a chemical reaction.
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| What is physical property? | The state, size, or shape of a substance.
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| What is Law of conservation mass? | Total mass of the products of a reaction is equal to the total mass of the reactants.
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| What is balanced equation | Shows the ratios of the number of molecules of reactants needed to make a certain number of molecules of products.
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| Whaqt is subscript? | Tells you the numberof each type of atom in the substance.
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| What is actual yeied? | Determined by simply measuring the mass, in grams, of the product produced in tthe actual reaction.
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| What is predicted yield? | Can be determined from the balanced equation for the reaction.
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| What is ratio? | The numerical relationship between two objects or substances.
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