[ Vocabulary ]
What are atoms of the same element that have different numbers of neutrons?
A. aluminium
B. radioactive dating
C. isotope
D. hydrogen
Select your answer:
Random Topics:
Modal Auxiliary VerbBrake vs. BreakThere vs. It There is or There areGrammar speak,talk,say,tellModal Verbs of Certainty and PossibilityMixed ConditionalGrammar / PronounsPresent Simple Positive and Negative
Other quiz:
Grammar › ViewI want to buy a mirror and a rug. …………….. mirror is for my sister’s room.
A. a
B. –
C. the
Grammar › View
What tense means already happened?
A. present
B. past
C. future
D. all of the above
How to use : Read the question carefully, then select one of the answers button.