Chemical Reactions and P-table

During a reaction, atoms are

• created

• destroyed

• neither created or destroyed - just rearranged

How many total atoms are in this compound? Al₂O₃

• 2

• 5

• 6

• 3

How many F atoms are in this compound?

MgF₂

• 2

• 6

• 8

• 12

Is a copper penny turning greenish after a few years a chemical or physical change?

• Chemical Change

• Physical Change

the starting materials in a chemical reaction are called what?

• Products

• Reactants

• Starters

• Enders

a substance that is formed as the result of a chemical reaction is called

• Product

• Reactant

• Starters

• Enders

How would you describe this chemical formula?
3 H2O

• 3 H2O molecules

• 3 H2O atoms
  

• 3 H2O elements

• 3 H2O parts

A chemical reaction is when...

• Atoms and molecules are destroyed

• Atoms and molecules are created

• Atoms and molecules break apart and regroup to form new products

• Atoms and molecules go on vacation and relax a little

Which chemical equation matches the model shown?

• 3C + 4O --> 3CO2

• 3C + 2O2 --> 3CO2

• C3 + 4O --> 3CO6

• C3 + 2O2 --> 3CO6

Balance this equation...
HgO --> Hg + O₂

• It is balanced 
• 2HgO --> Hg + O₂
• 2HgO --> 2Hg + O₂
• I don't know...Oh well!