Third Periodical Test Science 8

Sta. Lucia High School Sta. Lucia Dinalupihan Bataan Third Periodical Test in Science 8 Date:

 Name: Sec:

Multiple Choice. Encircle the letter of the correct answer. 1. Atoms Atoms can e !iewe" !iewe" un"er un"er this this t#pe t#pe of microscop microscope. e. a. High$p High$powe owere" re" Light Light Micros Microscop copee  . Scanning %unneling %unneling Microscope Microscope c. Elec Electr tron on Mic Micro rosc scop opee ". None of of th these &. A particl particlee consisting consisting of two or more more atoms comine" comine" togeth together er in a specific arrangem arrangement ent a. Atoms Atoms . partic particle le c. Molecu Molecule le ". Matter  Matter  '. %he propert# propert# of matter matter which ha!e ha!e "efinite "efinite shapes shapes an" !olume !olume ecause ecause the properties properties are pac(e" pac(e" closel# together. a. Soli Soli" " . Li)u Li)ui" i" c. *as *as ". +las +lasma ma ,. -t refers refers to the amount amount of of material material contai containe" ne" in in an oect oect.. a. /e /eight ight . Mass c. 0olume ". none of these these . /hich /hich of of the the follow following ing is is N2% N2% matt matter3 er3 a. air . salt c. light

". smo(e

4. %hese are properties properties of matter matter e5cept e5cept6666 6666666. 666. a. Air Air . Soli Soli" " c. *as *as ". Li)u Li)ui" i" 7. %he process process # which which the molecul molecules es on the surfac surfacee of a li)ui" li)ui" change change into into gas a. E!aporati E!aporation on . Con"ensat Con"ensation ion c. Saturation Saturation ". 8iltratio 8iltration n 9. %he process process where a gas gas is change" change" into into a li)ui". li)ui". a. E!aporati E!aporation on . Con"ensat Con"ensation ion c. Saturation Saturation

". 8iltratio 8iltration n

. %his %his is the the organi organi;e" ;e" chart chart of of Elemen Elements. ts. a.  . c. ".

+eri +erio" o"ic ic %a %ale le of of Eleme Element ntss +erio"ic Chart of Elements +eri +erio" o"ic ic *ra *raph ph of of Elem Element entss None of these

1 ma(es it essential essential to li!ing organisms3 a. Caron Caron forms forms cr#stal cr#stal struct structures ures un"er un"er certain certain con"i con"ition tions. s.  . Caron can e5ist as a soli"? soli"? li)ui"? or gas. c. Caron Caron on"s on"s in man# man# wa#s wa#s with with itself itself to form chains. chains. ". Caron Caron e5ist e5istss in ra"i ra"ioac oacti! ti!ee forms forms..

1. Al(ali metals? an" halogens are foun" respecti!el# in *roup66 an" 66 in the +erio"ic %ale. a. 1 an" 1 . & an" 1& c. 1 an" 17 ". 1 an" & 14. Atoms of metallic elements ten" to a. gain electrons an" form positi!e ions  . lose electrons an" form positi!e ions c. lose electrons an" form negati!e ions ". gain electrons an" form negati!e ions 17. / /hich of the following generall# applies to the nole gases3 a. high ioni;ation energ#? low electronegati!it#? high reacti!it#  . high ioni;ation energ#? high electronegati!it#? high reacti!it# c. low ioni;ation energ#? low electronegati!it#? low reacti!it# ". high ioni;ation energ#? low electronegati!it#? low reacti!it# 19. /hich are foun" in the nucleus of an atom3 a. electrons an" protons . neutrons an" protons

c. neutrons an" electrons

Use the Diagram below to answer items 19-22

1. %he part of an atom laele" B is a=an> a. proton . neutron c. electron

". none

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