Question: What three particles are found in an atom?

Answer: The three particles found in an atom are protons, neutrons, and electrons.

Question: Which two particles are found in an atom’s nucleus?

Answer: The two particles found in the nucleus are protons and neutrons.

Question: Why do scientists use models to study atoms?

Answer: Scientists study models because atoms are too small to be seen.

Question: Which two particles in an atom are equal in the number?

Answer: The atoms that are equal in the number are protons and electrons.

Question: How are elements identified in terms of their atoms?

Answer: Elements can be identified in terms of their atoms by the number of protons in the nucleus.