Front

What is the maximum number of electrons that can occupy the second energy level of an atom?

Back

8

Front

What is the half-life of carbon-14?

Back

5700 years

Tags

NGSS.HS-PS1-8

Front

If a sample of carbon-14 originally contained 100 grams and now contains 25 grams, how many half-lives have passed?

Back

2 half-lives

Tags

NGSS.HS-PS1-8

Front

How many years ago was a sample of wood that originally contained 100 grams of carbon-14 part of a living tree if it now contains 25 grams?

Back

11,400 years

Front

What is the charge of a neutron?

Back

Neutral (no charge)

Front

What is the mass number of an atom?

Back

The sum of the number of protons and neutrons in the nucleus.

Tags

NGSS.HS-PS1-8

Front

What subatomic particle is found in the nucleus and has a positive charge?

Back

Proton

Tags

NGSS.HS-PS1-8

Front

What is the relationship between the number of protons and the atomic number of an element?

Back

The atomic number is equal to the number of protons in the nucleus.

Front

What is an orbital in the context of atomic structure?

Back

An orbital is a region in an atom where there is a high probability of finding electrons.

Front

How many half-filled orbitals are present in Nickel (atomic number 28)?

Back

2 half-filled orbitals.

Tags

NGSS.HS-PS1-1