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:
Gerunds › ViewThey love ….. hamburgers
A. eating
B. drinking
C. walking
D. doing
Conjunctions and Commas › View
Which sentence uses a coordinating conjunction correctly?
A. She wanted to play outside, and it was raining.
B. She wanted to play outside and, it was raining.
C. She wanted to play outside, it was raining and.
D. She wanted to play outside but, it was raining.
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