Direction: Multiple Choice. Choose the letter of the correct answer. (Use CAPITAL LETTERS ONLY) 1. The negatively charge sub-atomic particles of the atom.

A. Atom 2. Which of the following model of atom describe the probability of finding the

B. Neutron

C. Proton

D. Electron

electrons outside the nucleus of the atom?

A. Planetary Model

C. Plum Pudding Model.

B. Quantum Mechanical Model following Element have

D. Gold Foil

3. Which of the A. Mn

the electron configuration of 1s 2s 2p 3s 3p4s³3d¹"?

B.F B. F 4. Sublevel that can hold up to 14 electrons?

C. S

D. Ca

A. s

B. p

C. d

D. f

5. The energy of electrons is determined by A. The location of electrons around the nucleus C. a and b

B. The interaction between electrons 6. It is the container of electron in sublevels.

D. None of the above

A. Atom

B. Orbital

C. Elements

D. Energy level

7. It is the way of distributing electrons in orbitals.

A. Shells B. Sublevel configuration of Oxygen?

C. Electron configuration D. Orbitals

8. What is the electron

A. 1s 2s 2p B. 1s 2s 2p

C. 1s 2s 2p²

D. 1s 2s 2p¹

9. Which of the following statement is not true?

A. Electrons that are far from the nucleus have a greater energy than those electrons near the nucleus. B. Energy level is always equal to the number of sublevels in the atom.

C. When both electrons interact, they tend to repel.

D. s orbital can have only 1 electron.

10. Sublevel f have A. Yes

7 orbitals.

B. No

C. Neither A or B that can be observed and measured without

D. None the above

11. It is

the property of compounds A.Chemical property

changing its composition. D. Physical Property

B.Paulings property

C. Personal Property

12. Which of

the following substances when dissolved in water conducts electricity? B. Powder

A.Oil

C. Salt

D. Sugar

13. Which of the

following pairs

would likely form ionic compound? C. Na and Cl

A. C and O

B. C and H

D. A and B

14. Which of the following is not an example of ionic compounds? A. Agua oxigenada B. Baking soda C. Chalk and marble

D. Sugar

15. What is the electronegativity

difference of Polar Covalent compounds?

A. Equal to 0.4 or less

C. More than 1.4 and less than 0.4

B. Less than 1.9 and more than 0.4

D. More than 2.0

16. A covalent bond in which electrons are shared unequally. A. lonic

B. Non Polar

C. Polar

D. All of the above

17.

Ionic compounds conduct electricity both in solid phase

and in solution.

A. False

B. Maybe

C. True

D. a and c

For items 18-20, choose your answers here.

A. Covalent compounds B. lonic compounds

Simple compounds D. Chemical compounds

18. Which of the following compounds have low melting point.

19. These compounds are non-conductors of electricity in solid phase and in solution? 20. Compounds that is generally soluble in water.

21. What do you call A. electron

to the

negatively charged particle of an atom?

B. molecules

C. neutron

D. proton

22. It is an atom that gain or lose electrons.

A. corrosive B. ion C. isotopes

D. radioactive.

23. What is the A. "1

charge of an atom that has lost one electron?

B. 1

C. 2

D. 2

24. What is the charge of an atom that has gained one electron?
A '1

B.1

C. 2

D. 2
25. It is located in the outermost shell of the atom that can be transferred to or shared with another atom.
A. neutron

B. proton

C. nucleus

D. valence electron

26.

Which of the following is NOT an organic

compound?

A. NaCl

B. C*O_{2}

C. CH.

D. CH CH₂CHS

27. What type of hydrocarbon has a double bond?

A. Alkane

B. Alkene

C. Alkyne

D. All of the above

28. Which of the following

is NOT an organic compound?

A. CaBr₂

B. CH.

C.C 6 H 12 O 6

D. CH₂OH

29. It is the study of the compounds that do not contain carbon.

A. Inorganic Chemistry B. Organic Chemistry

C. Analytical Chemistry

D. Biochemistry can form?

30.. What is the

maximum

number of bonds

a carbon atom
A. 4
B.5
C. 6
D. 8
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