Exploring Atoms and Isotopes Quiz

What is the central part of an atom called?

• Electron

• Nucleus

• Proton

• Neutron

Which subatomic particle has a positive charge?

• Electron

• Neutron

• Proton

• Positron

What is the term for atoms of the same element with different numbers of neutrons?

• Ions

• Isotopes

• Molecules

• Compounds

What is the process by which an unstable atomic nucleus loses energy by emitting radiation?

• Fission

• Fusion

• Radioactive Decay

• Ionisation

Which of the following is a type of radioactive decay?

• Alpha decay

• Beta decay

• Gamma decay

• All of the above

What is the mass number of an atom with 6 protons and 8 neutrons?

• 6

• 8

• 14

• 12

What is the atomic number of an element with 11 protons?

• 11

• 12

• 22

• 23

What is the unit of density in the metric system?

• kg/m

• kg/m²

• kg/m³

• kg/mile

Which of the following particles is not found in the nucleus of an atom?

• Proton

• Neutron

• Electron

• Quark

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable