This document contains a science test with multiple choice and short answer questions covering topics like electronic configurations, subshells, biomolecules, and alkanes. The test has four sections: 1) Multiple choice questions about electronic configurations of elements like lithium and boron, as well as properties of s- and d-subshells. 2) Short answer identification questions matching examples like sugar and RNA to the biomolecule types: carbohydrates, lipids, proteins, and nucleic acids. 3) Short answer questions providing the name and molecular formula of straight chain alkanes given the value of n in the general formula CnH2n+2. 4) A short free response question

1. RepublicofthePhilippines
DepartmentofEducation
REGION IV - A CALABARZON
SCHOOLS DIVISION OF BATANGAS
SAN JUAN WEST DISTRICT
ANGELES LUISTRO INTEGRATED SENIOR HIGH SCHOOL
BULSA, SAN JUAN, BATANGAS
2ND
SUMMATIVE TEST IN SCIENCE 9
II. Choose the letter of the correct answer. Encircle the letter of the correct answer.
1. What is the electronic configuration of Lithium? (Lithium has 3 electrons)
A. 1s12s2 B. 1s3 C. 1s12s12p1 D. 1s22s1
2. Boron has 5 electrons. Which of the following below is Boron’s electronic configuration?
A. 1s5 B. 1s22s22p1 C. 1s22s12p2 D. 1s12s22p2
3. Any s-subshell can hold up to maximum of how many electrons?
A. 10 B. 14 C. 2 D. 6
4. Any d-subshell can hold up to maximum of how many electrons?
A. 10 B. 14 C. 2 D. 6
5. The second quantum number is the ___________ that describe the shape of the orbitals.
A. Principal quantum number C. Magnetic quantum number
B. Angular momentum quantum number D. Spin quantum number
6. Organisms use ____________ as energy sources,structuralunits, and for other purposes and are
the largest class of organic compounds found in organisms.
A. carbohydrates B. lipids C. protein D. nucleic acid
7. _____________ are the molecules in our cells that direct and store information for reproduction
and cellular growth.
A. carbohydrates B. lipids C. protein D. nucleic acid
8. _____________ are used for energy storage,to build structures,and as signal molecules to help
cells communicate with each other.
A. carbohydrates B. lipids C. protein D. nucleic acid
II. Write in the space provided if the given examples or statements are classified as carbohydrate,
lipid, protein or nucleic acid.
_________________ 9. Sugar cubes
_________________ 10. Wheat bread
_________________ 11. A melted butter.
_________________ 12. Ribonucleic Acid
_________________ 13. Virgin Coconut Oil
_________________ 14. Deoxyribonucleic Acid
_________________ 15. Hair and nails that contain keratin
_________________ 16. An insulin needed by a diabetic patient
_________________ 17. Sweet extracted juice from fresh pineapple
_________________ 18. Earwax that protects insides of human ears

2. III. Given the value of n, write the names and molecular formulas of straight chain alkanes.
General Formula: CnH2n+2
19. If n = 2,
Name? b. Molecular Formula?
20. If n = 4,
Name? b. Molecular Formula?
21. If n = 5,
Name? b. Molecular Formula?
22. If n = 7,
Name? b. Molecular Formula?
23. If n = 9,
Name? b. Molecular Formula?
IV. Write the time History of the atom. (20pts)
PREPARED BY: NOTED BY:
CHRISTINE M. RAMOS ANTONINO S. PALAGANAS
TEACHER I / SCIENCE TEACHER HEAD TEACHER I