Chemical Equations Review

Read the following chemical formula: C₆H₁₂O₆. How many hydrogen atoms are in the formula?

• 12
• 6
• 4

The law of conservation of mass states that....

• Matter can be made
• Matter can be destroyed
• Matter can neither be made or destroyed

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• NO!

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

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

Is this balanced?...
Fe + S --> FeS

• YES!
• NO!

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

• Reactants
• Products 
• Yields 
• Chemical Equation 

What is the right part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

What is the left part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

A group of atoms bonded together. 

• A Molecule
• The Coefficient
• The Subscript
• An Atom Party