Understanding Elements and the Periodic Table

What is the Periodic Table of Elements?

• A chart that organizes elements based on their properties.

• A list of all known elements in alphabetical order.

• A table that shows the atomic weights of elements.

• A diagram that illustrates the structure of an atom.

Why is the Periodic Table important?

• It helps understand and organize elements.

• It is used to predict chemical reactions.

• It provides information about the history of chemistry.

• It is a tool for measuring atomic mass.

What is an Element?

• Part of an atom

• Like a unique block type with its own characteristics. 

• A changing state

What is the atomic number of an element?

• The number of neutrons in an atom.

• The number of protons in each atom.

• The total number of particles in the nucleus.

• The number of electrons in a neutral atom.

What is at the center of every atom?

• an electron

• only protons

• a molecule

• a nucleus

What does an element's atomic number represent?

• the element state at room temperature

• how metallic an element is

• the number of atoms in a compound

• the number of protons in an element

Who arranged the periodic table of elements by the atomic mass (or mass number)?

• Democritus

• John Dalton

• Henry Moseley

• Dmitri Mendeleev

How do elements help scientists?

• Creating artwroks.

• Understanding their desires.

• • Creating stuff like medicines and materials and experiment.