Periodic Table Lesson Review!

What did Dmitri Mendeleev discover?

• The atomic number of elements

• The properties of elements

• The structure of atoms

• A pattern of properties that applied to all elements.

What information does the periodic table contain?

• The atomic number, chemical symbol, names, and atomic mass of elements

• The atomic weight, chemical formula, and boiling point of elements

• The number of protons, neutrons, and electrons in an atom

• The melting point, density, and color of elements

How are elements arranged in the periodic table?

• In order of increasing atomic mass

• In order of increasing atomic number

• In order of increasing density

• In order of increasing melting point

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What is the purpose of leaving blank spaces in Mendeleev's periodic table?

• To indicate unknown elements that would be discovered later

• To show the gaps in the periodic pattern

• To represent elements with zero atomic mass

• To create a visually appealing design

Which group of elements are generally non-reactive?

• Group 1

• Group 7

• Group 18

• Group 17

What is the atomic number of potassium?

• 2

• 19

• 39.098

• 40.08

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What is the chemical symbol for gold?

• Au

• Ag

• Cu

• Pt

Which element has the atomic mass of 15.99 amu?

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

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What is the atomic mass of helium?

• 1.008 amu

• 4.003 amu

• 12.01 amu

• 16.00 amu

Which group of elements are metals?

• Group 1

• Group 16

• Group 18

• Group 17