Writing and Balancing Chemical Reaction

he substances at the beginning of a chemical equation are called the ____

In a chemical reaction, everything to the right of the arrow is called ______________.

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Translate the word equation below:

Nitrogen reacts with Hydrogen to form Ammonia (NH₃).

• N  → H + NH_3​
  

• N + H → NH_3​
  

• N_2​ + H₂​ → NH₃​
  

• N₂​ → H_2​ + NH₃​

Which equation is balanced?

• PbO₂ + 2H₂

• 2Na + 2H₂O --> 2NaOH + H₂

• SO₂ + H₂0 --> H₂SO₄

What is the little number after an element in a chemical equation called?

Example: H₂

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Which is NOT a diatomic molecule?

• Bromine

• Boron

• Nitrogen

• Fluorine

Which type of reaction can be recognized by the general pattern?

• 
  combustion

• single replacement

• combination

• decomposition