Psy 2.2.4

 Mg  +  ___ HCl  →   MgCl₂  +   H₂

• 1
• 2
• 3
• 4

Which problem is balanced?

• PbO₂ + 2H₂
• SO₂ + H₂0 --> H₂SO₄
• 2Na + 2H₂O --> 2NaOH + H₂

What is the little number after an element in a chemical equation called.
Example: H₂

• Coefficient 
• Subscript
• Atom
• Equation

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

• Yes
• No

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

• 2
• 6
• 1
• 4

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

The two sides of a chemical equation are called?

• Reactants (left) and Products (right)

• Ingredients (left) and Product (right)

• Cations and Anions

• Reactants (left) and Results (right)

How many Magnesium are in 10MgCl₂?

• 10
• 5
• 20

Number of N in (NH₄)₂CrO₄

• 1
• 2
• 8
• 16

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24