Átomo

An atom is the smallest unit that retains the chemical properties of an element. It consists of a central nucleus with protons and neutrons, surrounded by electrons. Atoms of the same element have the same number of protons.

What is the smallest unit that retains the chemical properties of an element?

• Molecule

• Atom

• Compound

• Ion

What is found at the center of an atom?

• Electrons

• Neutrons

• Nucleus

• Molecules

Which particles are located in the nucleus of an atom?

• Protons and neutrons

• Neutrons and electrons

• Protons and ions

• Electrons and protons

What surrounds the nucleus of an atom?

• Protons

• Neutrons

• Ions

• Electrons

What is consistent among atoms of the same element?

• Number of protons

• Number of ions

• Number of electrons

• Number of neutrons