Chemical Reactions Quiz

a precipitate is a (select two)

• solid forming from two aqueous solutions

• a sign of a chemical change

• a sign of a physical change

• an aqueous solution

Which of the following could be an indication that a chemical reaction has occurred?

SELECT ALL THAT APPLY!!!

• Bubbles

• Precipitate Formation

• Change in Mass

• Change in Shape

• Change in Temperature

What type of reaction is this?

Pb(NO₃)₂ + 2KI --> 2KNO₃ + PbI₂

• Double Replacement

• Single Replacement

• Synthesis

• Decomposition

The equation is balanced...

• True

• False

What type of reaction is this?

2Na + 2H₂O --> 2NaOH + H₂

• Single Replacement

• Double Replacement

• Synthesis

• Decomposition

The right side of the equation below is called the

• products
• reactants

The diagram shows

• a chemical change

• a physical change

• none of the above

The particle diagram shows

• a chemical change

• a physical change

• none of the above

Balance and determine the coefficients

• 1, 1, 1, 1

• 2, 1, 2, 1

• 1, 2, 1, 2

• 2, 2, 2, 2

The particle diagram shows

• a chemical change

• a physical change

• none of the above