Exploring Atoms, Ions, and Isotopes

What is the charge of a neutron?

• Positive

• Depends on the atom

• Negative

• Neutral

Where are electrons located in an atom?

• Attached to protons

• Between protons and neutrons

• In the electron cloud

• Inside the nucleus

In isotopic notation, where is the mass number written?

• Bottom right

• Top left

• Bottom left

• Top right

What does the atomic number represent?

• Number of electrons

• Number of protons

• Number of neutrons

• Total mass of the atom

How do you calculate the number of neutrons in an atom?

• Add the number of electrons to the mass number

• Subtract the number of electrons from the atomic number

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

What is the charge of an ion with more protons than electrons?

• Negative

• Positive

• Neutral

• It depends on the number of neutrons

What is a cation?

• A negatively charged ion

• A positively charged ion

• A neutral atom

• An isotope

How does an atom become a cation?

• By gaining electrons

• By losing electrons

• By gaining protons

• By losing protons

What defines isotopes of the same element?

• Same number of electrons, different number of protons

• Same number of neutrons, different number of protons

• Same mass number, different atomic number

• Same number of protons, different number of neutrons

Which of the following is an example of isotopes?

• Oxygen-16 and Nitrogen-16

• Hydrogen-1 and Helium-4

• Carbon-12 and Carbon-14

• Sodium-23 and Magnesium-24