Question

gizmo warm - up
atoms are tiny particles of matter that are made up of three particles: protons, neutrons, and electrons. the element builder gizmo shows an atom with a single proton. the proton is located in the center of the atom, called the nucleus.

1. use the arrow buttons (↑↓) to add protons, neutrons, and electrons to the atom. press play (►).

a. which particles are located in the nucleus?
b. which particles orbit around the nucleus?

1. turn on show element name. what causes the element name to change?

Explanation:

A. Protons and neutrons are located in the nucleus as they are the heavier particles that make up the dense central part of the atom.
B. Electrons orbit around the nucleus due to the electromagnetic - force interaction with the positively - charged nucleus.

1. The number of protons in the nucleus causes the element name to change. Each element is defined by its atomic number, which is equal to the number of protons.

Answer:

A. Protons and neutrons
B. Electrons

1. The number of protons in the nucleus