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Isotopes and Isobars

Chemistry ⇒ Atomic Structure and the Periodic Table

Isotopes and Isobars starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Isotopes and Isobars. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
Explain why isobars have different chemical properties.
Explain why isotopes of the same element have similar chemical properties.
Give an example of a pair of isotopes and a pair of isobars.
If two atoms have the same mass number but different atomic numbers, what are they called?
Isotopes of hydrogen are protium, deuterium, and tritium. Which one has the highest number of neutrons?
State one difference between isotopes and isobars.
What are isotopes?
A sample contains two isotopes of chlorine: ³⁵Cl (75%) and ³⁷Cl (25%). Calculate the average atomic mass of chlorine.
The chemical properties of isotopes of an element are usually (1) identical (2) very different (3) unpredictable (4) none of these
Which isotope of carbon is used in radiocarbon dating? (1) ¹²C (2) ¹³C (3) ¹⁴C (4) ¹⁵C
Which isotope of uranium is commonly used as fuel in nuclear reactors? (1) ²³⁵U (2) ²³⁸U (3) ²³⁴U (4) ²³⁶U
Which of the following is a pair of isobars? (1) ⁴⁰Ca and ⁴⁰Ar (2) ¹²C and ¹⁴C (3) ¹⁶O and ¹⁸O (4) ¹⁴N and ¹⁴C
Isotopes of an element have the same number of ________ but different number of ________.
Isotopes of an element have the same number of ________.
The atomic number of ¹⁴C is ________.
The atomic number of ⁴⁰Ar is ________.
If two atoms have the same number of neutrons but different numbers of protons, are they isotopes? (Yes/No)
If two atoms have the same number of protons but different numbers of neutrons, are they isotopes? (Yes/No)
Isobars are atoms that have the same mass number but different atomic numbers. True or False?
Isotopes can be separated by physical methods. True or False?