¿Qué es un átomo?

The video explains that everything in the universe, including humans and devices, is made of atoms. Atoms are composed of a nucleus with protons and neutrons, and electrons orbiting around it. Protons are positively charged, neutrons have no charge, and electrons are negatively charged. The mass of an atom is concentrated in its nucleus, while its size is defined by the electron orbits. Electrons orbit the nucleus in specific shells, each with distinct energy levels. The video compares the structure of an atom to a solar system, with electrons orbiting like planets around the sun.

What is the approximate number of atoms in the human body?

• 7 times 10 to 27

• 7 trillion trillion trillion

• 7 trillion

• 7 trillion trillion

Which subatomic particle has no charge?

• Nucleus

• Neutron

• Proton

• Electron

How do electrons and the nucleus interact within an atom?

• Through nuclear forces

• Through electrostatic attraction

• Through magnetic attraction

• Through gravitational attraction

What is the approximate size of an atom's radius?

• 10 to the power of negative 15 meters

• 10 to the power of negative 10 meters

• 10 to the power of negative 5 meters

• 10 to the power of negative 20 meters

Where do electrons have the highest energy levels?

• In the innermost shell

• In the outermost shell

• In the middle shell

• In the nucleus