Atom Ions and Isotopes Recap

Fill in the Blank

Atoms are surrounded by shells of ____________.

Multiple Choice

What two particles make up the nucleus of an atom? What are their charges?

• protons +

  neutrons 0

• protons +

  neutrons -

• protons +

  electrons -

• neutrons 0

  electrons -

Multiple Choice

Which of the following statements about neutral atoms is correct?

• The number of protons equals the number of electrons.

• The number of neutrons equals the number of electrons.

• The number of protons equals the number of neutrons.

• The number of electrons equals the atomic mass.

Multiple Choice

Which changes occur when an atom loses an electron?

• It becomes a positively charged cation.

• It becomes a negatively charged anion.

• Its atomic number increases.

• Its atomic mass decreases.

Multiple Choice

How does changing the number of neutrons in an atom affect the atom?

• It changes the atomic mass and creates an isotope.

• It changes the element.

• It changes the charge of the atom.

• It creates a cation.

Multiple Choice

Hydrogen-4 has how many neutrons?

• 1

• 2

• 3

• 4

Multiple Select

Which of the following are isotopes of carbon?

• Carbon-12

• Carbon-13

• Carbon-14

• Argon-36

Multiple Choice

Which of the following statements best describes isotopes?

• Atoms of the same element with different numbers of neutrons

• Atoms of different elements with the same number of protons

• Atoms of the same element with different numbers of protons

• Atoms of different elements with the same number of neutrons

Fill in the Blank

The isotope of carbon that is most common in nature is Carbon-___.

Multiple Choice

What are the main topics covered in today's lesson according to the agenda?

• Atoms, Isotopes, and Ions

• Photosynthesis and Respiration

• Chemical Reactions

• Electric Circuits