Practice Isotopes (4.6) - Structure of the Atom

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define isotopes.
Show hintHide hint
Think about what makes two atoms the same element.
Question 2.
What is the atomic number?
Show hintHide hint
Consider the definition of an element.
3Question 3.
What defines isotopes?
- Same atomic number, different mass
- Different mass number, same number of neutrons
- Different atomic number, same mass
Show hintHide hint
Think about how isotopes are related to the same element.
4Question 4.
True or False: Isobars are atoms of the same element.
- True
- False
Show hintHide hint
Consider the definitions of isotopes versus isobars.
Question 5.
An element has two isotopes. Isotope 1 has a mass of 10 u and makes up 80% of the element. Isotope 2 has a mass of 12 u. Calculate the average atomic mass.
Show hintHide hint
Similar to the chlorine example discussed.
Question 6.
If a certain isotope of carbon has 6 protons and 8 neutrons, identify its mass number and determine which isotope it is.
Show hintHide hint
Try to relate it back to the definition of isotopes.

5 more questions in this section. Enroll free to practise them all.