2. Isotopes Review

What defines an atom as a specific element?

• Number of neutrons

• Number of electrons

• Number of protons

• Atomic mass

What are isotopes?

• Atoms that are always unstable

• Atoms of the same element with different numbers of neutrons

• Atoms of different elements with similar properties

• Atoms with different numbers of electrons

Tags

NGSS.HS-PS1-8

Which carbon isotope is radioactive?

• Carbon-12

• Carbon-15

• Carbon-13

• Carbon-14

Tags

NGSS.HS-PS1-8

What is the use of Carbon-14 in science?

• To increase plant growth

• To date archaeological remains

• To study chemical reactions

• To create energy

How does Carbon-14 help determine the age of samples?

• By its color change over time

• By comparing its quantity to Carbon-12

• By its electrical conductivity

• By its temperature