what happens when a chemical reaction takes place?\nthings stay exactly the same.\nnew things with different…

what happens when a chemical reaction takes place?\nthings stay exactly the same.\nnew things with different properties are made.\nthings just get mixed together without changing.\nthe old things disappear completely.\nthe reaction 2h₂o → 2h₂ + o₂ is an example of which type of chemical reaction?\nneutralization\ndecomposition\nsynthesis\ncombustion\nwhich of the following chemical equations is already balanced?\nmg + o₂ → mgo\n2kclo₃ → 2kcl + 3o₂\nfe + o₂ → fe₂o₃\nn₂ + h₂ → nh₃

what happens when a chemical reaction takes place?\nthings stay exactly the same.\nnew things with different properties are made.\nthings just get mixed together without changing.\nthe old things disappear completely.\nthe reaction 2h₂o → 2h₂ + o₂ is an example of which type of chemical reaction?\nneutralization\ndecomposition\nsynthesis\ncombustion\nwhich of the following chemical equations is already balanced?\nmg + o₂ → mgo\n2kclo₃ → 2kcl + 3o₂\nfe + o₂ → fe₂o₃\nn₂ + h₂ → nh₃

Answer

Brief Explanations:

  1. In a chemical reaction, chemical bonds are broken and new bonds are formed, resulting in the creation of new substances with different properties.
  2. In a decomposition reaction, a single compound breaks down into two or more simpler substances. In the reaction $2H_2O\rightarrow2H_2 + O_2$, water breaks down into hydrogen and oxygen, which is a decomposition reaction.
  3. A balanced chemical equation has the same number of each type of atom on both sides of the equation. For $2KClO_3\rightarrow2KCl + 3O_2$, on the left - hand side, there are 2 potassium (K), 2 chlorine (Cl) and 6 oxygen (O) atoms. On the right - hand side, there are 2 potassium (K), 2 chlorine (Cl) and 6 oxygen (O) atoms.

Answer:

  1. New things with different properties are made.
  2. Decomposition
  3. $2KClO_3\rightarrow2KCl + 3O_2$