Balancing Equations

What is a coefficient?

• The small number on the right of the chemical symbol.

• The large number to the left of a formula.

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.

Which side of a chemical equation is the product side?

• Left (before the arrow)
• Right (after the arrow)

Which side of a chemical equation is the reactant side?

• Left (before the arrow)
• Right (after the arrow)

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

• Yes
• No

What is the number before a compound in a chemical equation called. Example: 2Na

• Coefficient 
• Subscript
• Atom
• Equation

What is the arrow in a chemical equation...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Produces
• Chemical Equation 

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction. 

The blue numbers in the image below represent ________

• Charges
• coefficients
• subscripts
• none of the answers are correct

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction