Exploring the Size of Atoms

The video explains the incredibly small size of atoms, using comparisons to human hair and everyday objects. It visualizes atomic scale with grains of rice and sand, and describes the structure of atoms, consisting of protons, neutrons, and electrons. The concept of quantum fluctuations filling the empty space in atoms is introduced. The video also discusses the density of atomic space in extreme objects like neutron stars. It explains electron probability clouds and how atoms form elements, with all atoms of an element being identical.

How many carbon atoms stacked over each other would be as thick as a human hair?

• 5,000,000

• 50,000

• 500,000

• 50,000,000

If one atom in your fist were as big as a marble, how big would your fist be?

• As big as a house

• As big as a car

• As big as a basketball

• As big as Earth

What are the three elementary particles that make up an atom?

• Protons, electrons, and quarks

• Neutrons, electrons, and gluons

• Protons, neutrons, and electrons

• Protons, neutrons, and photons

What holds the protons and neutrons together in the atom core?

• Electromagnetic force

• Gravitational force

• Weak interaction

• Strong interaction

Tags

NGSS.HS-PS1-8

What percentage of an atom's volume is empty space?

• 99.9999999999%

• 99.99999999999%

• 99.999999999%

• 99.999999999999%

What fills the 'empty' space within an atom?

• Photons

• Neutrinos

• Quantum fluctuations

• Dark matter

How much space would the atom cores of the Empire State Building occupy if all the empty space was removed?

• As big as a house

• As big as a rice corn

• As big as a basketball

• As big as a car

What is the probability of finding an electron far from the atom core?

• 0%

• It never actually reaches 0%

• 5%

• 50%

What do you get when you add a proton and a neutron to a hydrogen atom?

• Carbon

• Helium

• Oxygen

• Nitrogen

Tags

NGSS.HS-PS1-8

How are all hydrogen atoms in the universe described?

• The same as each other

• Different from each other

• Similar but not identical

• Varied in structure