UNIT 2 TEST 2 (Structures-Prop

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STRUCTURE AND PROPERTIES OF MATTER SCH4U Page 1 of 7 Student’s Name : Date: TEST #02 Knowledge / Understanding Thinking/Inquiry Communication Application Marks 15 15 15 15 60 Part -A: Knowledge/ Understanding (Marks -15) Multiple choice 15@1= 15 Marks ----------. 1. The 3p atomic orbital has the shape of a. a sphere b. a torus c. a dumb- bell d. two perpendicular dumb bells ---------- 2. How does atomic radius change from left to right across a period of the Periodic table? a. it tends to decrease b. it tends to increase c. it does not change d. it first increase and then decrease ----------- 3. Why do energy levels exist in atoms? a. electrons are negatively charged b. electrons are attracted to certain numbers of neutrons c. electrons are only able to possess quanta of energy d. electrons will display only certain colors ----------- 4. Which feature of atomic structures was discovered the earliest? a. the electron b. the protons c. the nucleus d. the orbit
STRUCTURE AND PROPERTIES OF MATTER SCH4U Page 2 of 7 ----------- 5. Chemical bonding can best be prepared and explained by the properties of a. valence electrons b. inner core electrons c. the effective nuclear charge d. the atomic radius ------------- 6. Which of the following is an example of an intermolecular force? a. hydrogen bond b. covalent bond c. ionic bond d. metallic bond -------------- 7. Oxygen gas and nitrogen gas are both non-polar molecules, but can dissolve, sparingly in water because a. water is a universal solvent b. of ion induced dipole forces c. of dipole induced dipole forces d. of dispersion forces --------------- 8. VSEPR theory allows you to predict a. the polarity of a simple molecule b. whether a compound is ionic or molecular c. the shape of a molecule around a central atom d. the lewis structure ---------------- 9. Which statement is best description of potassium chloride? a. polar molecule b. polar bond non polar molecule c. ionic compound d. non polar molecule ----------- 10. How will four pairs of electrons surrounding a central atom be arranged? a. pyramidally b. spherically
STRUCTURE AND PROPERTIES OF MATTER SCH4U Page 3 of 7 c. tetrahedrally d. trigonally ------------ 11. Which of the following does not have an electron configuration ending with 3s 2 3p 6 ? a. chloride ion b. sulphide ion c. aluminum ion d. calcium ion ---------- 12. Quantum theory is used to explain a. subatomic particles b. nuclear physics c. optics d. all of the above ----------- 13. Which of the following is not used to determine an electron configuration for an atom? a. Hund’s rule b. Heisenberg’s uncertainty principle c. the Pauli’s exclusion principle d. the Aufbau principle --------- 14. In reaction with non metals , metals tend to a. gain electrons and become negative ions b. gains electrons and become positive ions c. lose electrons and become negative ions d. lose electrons and become positive ions --------- 15. Which of the following orbitals is the highest in energy? a. 3p b. 3d c. 4s d. 4p
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