The Fascinating World of the Periodic Table

Who is credited with creating the first widely recognized periodic table?

• Dmitri Mendeleev

• Albert Einstein

• Isaac Newton

• Marie Curie

What is the modern periodic table organized by?

• Atomic number

• Atomic mass

• Alphabetical order

• Date of discovery

As you move across a period from left to right, what generally happens to the atomic radius?

• It decreases

• It increases

• It remains the same

• It fluctuates randomly

Which of the following is a property of metals as described in the passage?

• Conductive

• Poor conductors

• Brittle

• Non-reactive

What does the periodic table help scientists do according to the passage?

• Predict the behavior of elements in chemical reactions

• Determine the color of elements

• Calculate the weight of elements

• Identify the temperature at which elements melt