[ Vocabulary ]
a physical system that does not allow transfer of matter in or out of the system
A. conservation of matter
B. closed system
C. reactant
D. chemical reaction
Random Topics:
Articles and PronounsGrammar (either..or.. and neither..nor..)Adverbs of Manner, Likes and PreferencesVocabulary and PrepositionsIndirect SpeechDemonstrative PronounModals and Past ModalsProgressive TensePast Simple VerbsTenses and VerbsOther quiz:
Grammar › ViewMary has Q35.00, she spent Q10.00 in a blouse, Q5.00 in a pair of socks and Q3.00 in a cup cake. How much money does she has left?
A. seventeen 17
B. Twenty 20
C. Ten 10
D. sixteen 16
Unreal Conditionals › View
Which is incorrect?
If she has time, she would read more.
A. has
B. ,
C. would read
Grammar › ViewThe adjectives are words use to describe a person, place or thing
A. TRUE
B. FALSE
Question Tags › View
You didn’t turn of the light,……?
A. right
B. did you
C. didn’t you
D. did I