11558541
Description
Flashcards by ella stokes, updated more than 1 year ago
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Created by ella stokes
over 6 years ago
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| Question | Answer |
| what is conservation of mass | in a chemical reaction,the total mass of the products is equal to the total mass of the reactants. This idea is called the conservation of mass |
| why is mass conserved | mass is conserved(kept the same) because no atoms are lost or made |
| write a symbol equation for when solid iron reacts with copper sulfate solution |
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50 (binary/octet-stream)
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| what is a half equation |
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51 (binary/octet-stream)
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| write the two half equations for the reaction between iron and copper sulfate |
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53 (binary/octet-stream)
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| what are ionic equations |
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54 (binary/octet-stream)
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| when silver nitrate solution is added to sodium chloride solution a white precipitate of silver chloride is produced -write the word equation and the ionic equation for this reaction |
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55 (binary/octet-stream)
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| in chemistry what does the term'species' mean | in chemistry the term 'species' refers to the different atoms, molecules and ions that are involved in a reaction |
| what is relative formula mass | the relative formula mass of a compound is the sum of the relative atomic masses of all the atoms in the numbers shown in the relative formula. It does not have a unit |
| what is the relative formula mass of carbon dioxide |
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| calculate the relative formula mass of calcium nitrate |
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58 (binary/octet-stream)
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| what is the total mass of the products of a chemical reaction always equal to and why |
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56 (binary/octet-stream)
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| what makes the sum of the relative formula masses of all the reactants equal to the sum of the relative formula masses of all the products | the conservation of mass |
| what will some reactions appear to involve and why | some reactions appear to involve a change in mass. This happens when reactions are carried out in a non-closed system and include a gas that can enter or leave |
| give an example of a reaction that appears to involve a change in mass and write a symbol equation for it |
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| what happens when calcium carbonate is heated | it decomposes to form calcium oxide and carbon dioxide |
| write a symbol equation for when calcium carbonate is heated |
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60 (binary/octet-stream)
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| after this reaction what happens to the mass of the product |
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61 (binary/octet-stream)
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