Practice: atomic structure (subatomic particles, charges/masses, atomic number, mass number, neutrons, and isotopes). Answer each question and use the feedback to correct misconceptions.
Which subatomic particle has a relative charge of -1?
Which statement correctly describes where the nucleus is located and what it contains?
Which statements are true about a neutral atom? (Select 2)
What is the atomic (proton) number?
An atom has a mass number of 23 and an atomic number of 11. How many neutrons does it have?
Two atoms are isotopes of the same element if they have the same number of ____ but different numbers of ____.
Which subatomic particle has a relative charge of +1?
Which subatomic particle has a relative charge of 0?
Which subatomic particle is found in electron shells (energy levels) around the nucleus?
Which two particles are found in the nucleus? (Select 2)
The atomic number tells the number of which subatomic particle?
Which statement best describes the mass number (atomic mass) of an atom?
An atom has an atomic number of 8 and a mass number of 16. How many neutrons does it have?
A neutral atom has 13 protons. How many electrons does it have?
Which statements describe a neutral atom? (Select 2)
Which particle defines the type of atom (the element)?
Which statement correctly compares the relative masses of a proton and a neutron?
Which statement correctly describes the relative mass of an electron?
Which statement correctly compares the size of an atom to the size of its nucleus?
An atom has 15 protons and 16 neutrons. What is its mass number?
An atom has a mass number of 40 and an atomic number of 20. How many neutrons does it have?
Two atoms are isotopes of the same element because they have the same number of ____.
Which change would create an isotope of an element?
Which statement correctly defines relative atomic mass?
What is the relative charge of an electron?
What is the relative charge of a neutron?
What is the relative charge of a proton?