Unit 3 Exam Review

Question 1 Acetone in Styrofoam: physical or chemical change?

Question 2 Name two ways to recognize a chemical reaction has occurred.

Question 3 Why is boiling water a physical change?

Question 4 A physical change is a change in size or a change in _______.

Question 5 What is the difference between a physical/chemical property and a physical/chemical change? Give examples:

Question 6 Do reactants or products have more energy in an exothermic reaction?

Question 7 What does a catalyst do? Draw it on the graph:

Question 8 What is a real-life example of an inhibitor?

Question 9 If I wanted to slow down a reaction, what could I do?

Question 10 How does surface area affect the speed of a reaction?

Question 11 How do sugar and salt dissolve differently?

Question 12 What is the universal solvent?

Question 13 Name the solute and solvent for milk: What type of mixture is milk?

Question 14 What is the difference between saturated solutions and supersaturated solutions?

Question 15 Balance and Identify: ____K(ClO3)  ____KCl + ____O2 Type of reaction:_______________

Question 16 Balance and Identify: ____C6H6 + ____O2  ____H2O + ____CO2 Type of Reaction: ____________

Question 17 Balance and Identify: ____Mg(OH)2 + ____H2(SO4)  ____Mg(SO4) + ____H2O Type of Reaction: ____________

Question 18 What ion do acids make in solution? What ion do bases make in solution?

Question 19 What is the acid in the following reaction? H2(SO4) + H2O  H3O+ + SO42-

Question 20 What are the two products of a neutralization reaction between an acid and a base?

Honors Continued Question 21 What is the difference between physical and chemical equilibrium?

Question 22 What is the purpose of a mole ratio? Where does a mole ratio come from?

Question 23 Solve the following problem: Convert 755.0 grams of NaH(CO3) into moles of NaH(CO3).

Question 24 Using the following equation, solve the problem before. **Balance First** ____C3H8 + ____O2  ____CO2 + ____H2O If I had 13 moles of oxygen gas reacted, how many moles of water would be produced?

Question 25 Balance this super difficult equation: ____Cu + ____H(NO3)  ____Cu(NO3)2 + ____NO + ____H2O