Atomic Structure and Elements Quiz

Which of the following best describes the periodic table?

• A list of all known compounds

• A chart that organizes elements based on their properties

• A table showing the number of molecules in a substance

• A list of all chemical formulas

What is a molecule?

• The smallest unit of an element

• A substance made up of only one type of atom

• A group of two or more atoms bonded together

• A particle with a positive charge

Which subatomic particle has a positive charge?

• Electron

• Neutron

• Proton

• Atom

The atomic number of an element represents the number of:

• Protons in an atom

• Electrons in a molecule

• Neutrons in an atom

• Nuclei in an element

Which of the following is a pure substance made of only one type of atom?

• Element

• Compound

• Molecule

• Proton

A compound is formed when:

• Two or more atoms of the same element bond together

• Two or more elements chemically combine

• A nucleus splits into two smaller nuclei

• Electrons are lost from an atom

Which subatomic particle has no charge?

• Proton

• Electron

• Neutron

• Molecule

The nucleus of an atom contains:

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

• Only neutrons

What is the smallest unit of matter?

• Atom

• Proton

• Electron

• Nucleus

Which subatomic particle is found outside the nucleus and has a negative charge?

• Neutron

• Proton

• Electron

• Nucleus