Chemistry Quiz

Which part of an atom is responsible for defining the element's identity?

• Energy levels
• Electrons
• Protons
• Neutrons

What are ions?

• Atoms with a different number of energy levels
• Atoms with a different number of electrons and neutrons
• Atoms with a different number of protons and neutrons
• Atoms with a different number of protons and electrons

Where are protons and neutrons located within an atom?

• Surrounding the nucleus
• In the nucleus
• In the energy levels
• In the electron cloud

When is an ion positively charged?

• When it has more neutrons than protons
• When it has equal protons and electrons
• When it has more electrons than protons
• When it has more protons than electrons

How is mass computed in an atom?

• By adding the number of protons and electrons
• By adding the number of protons and neutrons
• By subtracting the number of electrons from protons
• By multiplying the number of protons and neutrons

What is the charge of a neutral atom?

• Positive
• Negative
• Zero
• Variable

What is the charge of protons, neutrons, and electrons, respectively?

• Negative, positive, neutral
• Neutral, positive, negative
• Positive, positive, negative
• Positive, neutral, negative

How is the mass of an element affected by isotopes?

• It increases
• It varies based on the number of neutrons
• It remains constant
• It decreases

What are the three main components of an atom?

• Electrons, neutrons, photons
• Protons, electrons, photons
• Protons, positrons, neutrons
• Protons, electrons, neutrons

What are isotopes?

• Atoms with a different number of energy levels
• Atoms with a different number of neutrons
• Atoms with a different number of electrons
• Atoms with a different number of protons