[ Vocabulary ]
a process in which one or more substances are converted to one or more different substances
A. conservation of matter
B. closed system
C. chemical reaction
D. reactant
Random Topics:
Too or EnoughTransitional WordsPast Tense (Regular and Irregular)Articles and DemonstrativesPassive and Active VoicePresent Progressive or Present SimpleTenses - Present and PastStative Verbs and TensesAdjectives, Adverbs, and PrepositionsRelative Clauses & Real ConditionalsOther quiz:
Reported Speech › ViewJames________ him up when the bus reached the square.
A. . told me wake
B. asked me to wake
C. said me to wake
D. requested me waking
Tenses › View
She (swim) in the sea tomorrow.
A. swim
B. swims
C. will swim
D. swam
Vocabulary › Viewto ask questions, examine by questioning
A. interrogate
B. trivial
C. vicious
D. truce
Grammar › View
What are the four principal parts of a verb?
A. Infinitive, present participle, past, past participle
B. Infinitive, present, future, past
C. Present, past, future, past participle
D. Infinitive, present, past, future participle