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Chem05

Chemistry chapter 5 - Chemical Sentences

QuestionAnswer
In a chemical equation, what does "→" stand for? The arrow means "yields, as in "__+__ yields__"
What are the elements and/or molecules on either side called? The components on the left are the products, and the components on the right are reactants. Products → Reactants
What is the difference between the coefficient numbers and the subscript numbers in a chemical equation? The coefficient numbers show how many of each molecule is involved in the reaction. The subscript numbers show how many of each atom are within each molecule.
What is a mole? The mole is a unit of measurement used to express amounts of a chemical substance; the molecular weight expressed in grams.
What is the relevance of 6.02X10^23, in terms of moles? It represents the number of atoms in 1 mole.
Identify the following equation. CO2+H2O → C6H12O6+O2 This is the equation for photosynthesis
Explain the system used to show the amount of ethyl alcohol in liquor. The proof of an alcoholic beverage is twice its alcohol content expressed as percentage by volume.
Created by: dellisari