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Balancing chemical equations (KS3/GCSE) Answers. 2O2 + NH3 -> HNO3 + H2O. 3O2 -> 2O3. 2H2O2 -> 2H2O + O2. 2Rb + 2H2O -> 2RbOH + H2. Cl2 + 2KBr -> 2KCl + Br2.
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Balancing chemical equations (KS3/GCSE) – Questions © www.chemistrytutor.me 2018 Page 1 of 3 1. _O 2 + _NH 3-> _HNO 3 + _H 2 O 2. _O 2-> _O 3 3. _H
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Balanced equations only show formulae, not names. A balancing number multiplies all the atoms in the substance next to it.
Balanced symbol equations show what happens to the different. atoms. in reactions. For example, copper and oxygen react together to make copper (II) oxide. For the reaction, copper + oxygen →...
Chemical equations must be balanced so that the quantities of reactants and products match. For an equation to be balanced there must be an equal numbers of atoms on...
Oct 7, 2021 · This balancing chemical equations practice sheet has ten more unbalanced chemical equations to solve. Download a PDF of this worksheet here. A PDF of the answer key is also available here. If you’d just like to check your answers, click here to see the completed sheet.
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Balancing Chemical Equations. Chemical equations must be balanced to make sure that there are the same number of atoms of each element before and after a reaction. The reaction of hydrogen with oxygen to make water will be used as an example of how to do this:
