Name ___________________ Date ___________________ 9____Test Number: 3

Unit Exam: Matter and Chemical Change

SECTION A: Matching Write the corresponding letter in the space provided.

1. ______ Group A. Slow chemical change that occurs when oxygen in the air reacts with metal

2. ______ Period B. Vertical column of elements in the periodic table

3. ______ Physical Change C. Pure substances that form when non-metals combine

4. ______ Metal D. A change where materials change from one state to another

5. ______ Closed System E. A chemical reaction that absorbs energy

6. ______ Exothermic F. Horizontal row of elements on the periodic table

7. ______ Combustion G. Pure Substances formed when at least one metal and one non-metal collide

8. ______ Corrosion H. The most stable and unreactive elements.

9. ______ Endothermic I. Shiny, malleable, ductile element that conducts electricity

10.______ Molecular Compound J. Dull, brittle element that does not conduct electricity

11.______ Chemical Change K. A chemical reaction that occurs when oxygen reactions with a substance to form a new substance and give off energy

12.______ Ionic Compound L. Orbit of electrons around the nucleus of an atom

13.______ Electron shells M. A chemical reaction that releases energy

14.______ Non-metal N. Change where two or more materials react and create new materials

15.______ Noble Gas O. No additional material is allowed to enter or leave

SECTION B: Multiple Choice and Numerical Response:Fill in the Scantron and numerical response sheet with the appropriate selection

1. The boiling of water is considered to be a physical change because A. a new substance is formedB. the water evaporatesC. the process is reversible D. water molecules are broken down

Name ___________________ Date ___________________ 9____Test Number: 3

Use the following information to answer numerical-response question 1

Reactions of Four Metals with Three Substances

Metal Reaction with Water Reaction with Dilute Acid

Reaction with Oxygen

1 No reaction Slow reaction No reaction2 Reaction Explosive reaction Reaction3 No reaction Reaction Reaction4 No reaction No reaction No reaction

Numerical Response

1. Listed in order of least reactive metal to most reactive metal the four metals are:

Least ___________ ___________ ___________ ___________ Most

Record your answer on the numerical response section of your answer sheets

Use the following information to answer question 2

During a laboratory experiment, four students each combined two substances and recorded their observations.

Student Substance I Substance II Substances I and II Combined

1 White solid Clear liquidClear liquid that remains at a temperature of 15 °C

2 Clear liquid Blue solid Blue liquid

3 White solid Clear liquid Clear liquid that bubbles

4 Yellow liquid White solid White solid that floats on top of the yellow liquid

2. Which student most likely produced a new chemical substance? A. Student 1 B. Student 3 C. Student 2 D. Student 4

Name ___________________ Date ___________________ 9____Test Number: 3

3. Which of the following rows identifies both the elements and the total number of atoms that are present in one molecule of CH3COOH(aq)?

Row Elements Total Number of Atoms

A. Carbon, helium, and oxygen 3

B. Carbon, helium, and oxygen 8

C. Carbon, hydrogen, and oxygen 3

D. Carbon, hydrogen, and oxygen 8

4. Which of the following pairs of elements has the most in common:A. Sodium and NeonB. Sodium and MagnesiumC. Flourine and OxygenD. Flourine and Chlorine

5. Rutherford used the solar system as a model to explain the structure of an atom. When this model is compared to an atom

A. NeutronsB. ElectronC. ProtonsD. Nucleus

Numerical Response

2. For each of the elements given below, indicate whether it is a metal or non-metal using the following code: 1 – Metal

2 – Non-metal

________ ________ ________ ________Aluminum Fluorine Lithium Phosphorus

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

Record your answer on the numerical response section of your answer sheets

Name ___________________ Date ___________________ 9____Test Number: 3

6. When magnesium metal is placed in hydrochloric acid, hydrogen gas bubbles are produced. Which of the following combinations of reactants would have the fastest reaction rate?

7. In a science demonstration, a teacher combined fluorescent dye, hydrogen peroxide, and a chemical called CPPO. The resulting solution produced heat and a bright green glow. What type of reaction did the teacher demonstrate?

A. EndothermicB. CombustionC. ExothermicD. Corrosion

Name ___________________ Date ___________________ 9____Test Number: 3

8. Which of the following statements accurately describes the reaction below:

2HCl(aq) → H2(g) + Cl2(g)

A. Hydrogen gas and chlorine gas are produced when hydrochloric acid is broken down.

B. Combining hydrogen gas and chlorine gas produces hydrochloric acid. C. Combining hydrochloric acid with hydrogen gas produces chlorine gas. D. Hydrogen gas is produced when hydrochloric acid is combined with chlorine gas.

Use the following information to answer numerical-response question 3

Substance Conducts Electricity State at Room Temperature

X No Gas

Y Yes Solid

Z No Liquid

Numerical Response

3. Classify the substances as ionic or molecular using the following code:

1 – Ionic2 – Molecular

__________ __________ __________ X Y Z

Record your answer on the numerical response section of your answer sheets

Name ___________________ Date ___________________ 9____Test Number: 3

Use the following information to answer the next question:

9. The information above shows that a fluorine atom has i electrons and ii neutrons.

The statement above is completed by the information in row

Row i ii

A. 9 10

B. 9 28

C. 19 28

D. 19 10

10.Which of the following word equations correctly restates the equation below?

Mg(s) + CuO(s) MgO(s) + Cu(s)

A. Magnesium + oxide copper(II) →magnesium oxide + copper B. Magnesium + copper →magnesium oxide + copper(II) oxide C. Magnesium + copper →magnesium oxide + oxide copper(II) D. Magnesium + copper(II) oxide →magnesium oxide + copper

Name ___________________ Date ___________________ 9____Test Number: 3

Use the following information to answer numerical-response question 4

The following chart identifies certain characteristics of chemical compounds:

W Generally has low melting and boiling pointsX Is a good conductor of electricityY Formed by the union of a metal with a non-metalZ Involves the attraction of charged particles

Numerical Response

4. Write the number 1 in the blank if the characteristic refers to an ionic compound, and write the number 2 in the blank if the characteristic refers of a molecular compound

__________ __________ __________ __________W X Y Z

Record your answer on the numerical response section of your answer sheets

Use the following information to answer the next question:

11.The unknown reactant and its mass are

A. oxide and 128 g B. oxygen and 16 g C. oxygen and 128 g D. oxide and 16 g

Name ___________________ Date ___________________ 9____Test Number: 3

Use the following information to answer numerical-response question 5

Numerical Response

5. The mass of oxygen that reacts in the chemical reaction described above is ________ g.

Record your answer on the numerical response section of your answer sheets

12. A student is given an antacid tablet and a container of mild acid. What could the student do to best slow the rate of the reaction that will occur between the tablet and the acid?

A. Crush the tablet and drop it into warm acidB. Drop the whole tablet into cold acidC. Drop the whole tablet into warm acidD. Crush the tablet and drop it into cold acid

13.What doe the atomic number of an element indicate?A. The number of protons and the number of electrons in an atomB. The number of neutrons in an atomC. The number of protons in an atomD. The mass of an atom

14.Iron combines with oxygen to form rust, which is iron(III)oxide (Fe2O3). What are the charges of the iron ion and oxygen ion, respectively?

A. Fe3+, O-

B. Fe2+, O-

C. Fe3+, O2-

D. Fe2+, O3-

15.Which of the following characteristics does NOT apply to water?A. It can be any of a solid, liquid, or a gas at room temperatureB. It is a good solvent

Name ___________________ Date ___________________ 9____Test Number: 3

C. It forms crystals in a solid formD. It is colourless at room temperature