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Lesson: Isotopes

Sample Question Videos

Worksheet • 10 Questions • 1 Video

Q1:

An uncharged atom has an atomic number of 6 and a mass number of 11.

How many protons does that atom have?

How many neutrons does that atom have?

How many electrons does that atom have?

Q2:

A neon atom has the chemical symbol 2 2 1 0 N e .

How many protons does the neon atom have?

How many neutrons does the neon atom have?

Q3:

A platinum atom has the chemical symbol 1 9 5 7 8 P t .

How many protons does the platinum atom have?

How many neutrons does the platinum atom have?

Q4:

The mass number of an atom is how many it has.

  • Aprotons plus neutrons
  • Belectrons
  • Cneutrons
  • Dprotons plus electrons
  • Eprotons

Q5:

The atomic number of an atom is how many it has.

  • Aprotons
  • Bprotons plus electrons
  • Cneutrons
  • Dprotons plus neutrons
  • Eelectrons

Q6:

The chemical element symbol for titanium-48 is 4 8 2 2 T i .

What is the atomic number of titanium?

What is the mass number of titanium?

Q7:

Two atoms are different isotopes of the same element if they have the same but different .

  • Aatomic number, mass numbers
  • Bnumber of electrons, numbers of protons
  • Cmass number, atomic numbers
  • Dnumber of neutrons, numbers of electrons
  • Enumber of protons, numbers of electrons

Q8:

All atoms of the same element have the same number of .

  • Aelectrons
  • Bprotons
  • Cneutrons

Q9:

Which of the following is another name for “atomic number?”

  • AProton number
  • BNeutron number
  • CMass number
  • DElectron number
  • ENucleon number

Q10:

A nitrogen atom has the chemical symbol 1 4 7 N .

How many protons does the nitrogen atom have?

How many neutrons does the nitrogen atom have?

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