The Periodic Table

Multiple Choice

Who was the first to publish a system for organizing elements, and what property did he use to group them?

• Dmitri Mendeleev, increasing atomic mass

• Henry Moseley, atomic number

• John Dalton, atomic weight

• Marie Curie, radioactivity

Multiple Choice

Which of the following statements describe Henry Moseley's contribution to the periodic table?

• He rearranged the elements based on their atomic number.

• He grouped elements with similar properties.

• He predicted the existence of undiscovered elements.

• He published the first periodic table.

Multiple Choice

What do all elements in the same group (vertical column) of the periodic table have in common?

• Same number of valence electrons

• Same atomic mass

• Same number of energy levels

• Same physical state

Multiple Choice

Which of the following is NOT a property of alkali metals?

• They are hard and brittle

• They have one valence electron

• They are soft and silvery colored

• They are the most reactive group of metals

Multiple Select

Which of the following elements are alkali metals?

• Lithium

• Potassium

• Magnesium

• Rubidium

Multiple Choice

Which of the following is a property of alkaline earth metals but NOT alkali metals?

• They are less reactive, harder, and denser

• They have one valence electron

• They are soft and silvery colored

• They form +1 ions

Open Ended

Explain why transition metals can form colored compounds, using examples from the periodic table.

Multiple Select

Which of the following are typical properties of transition metals?

• High melting and boiling points

• Electrical and thermal conductors

• Low densities

• Malleable and ductile

Multiple Choice

Which of the following is NOT a transition metal?

• Scandium

• Iron

• Copper

• Sodium

Open Ended

Explain the difference between lanthanoids and actinoids in terms of their properties and occurrence.

Multiple Select

Which of the following elements belong to the Boron family?

• Boron

• Gallium

• Iron

• Aluminum

Multiple Choice

Which of the following elements is a metalloid?

• Germanium

• Lead

• Tin

• Carbon

Multiple Select

Which of the following statements about Group 15 elements are correct?

• They all have 5 valence electrons.

• Nitrogen is a non-metal.

• Bismuth is a good conductor of heat.

• Arsenic and antimony are metalloids.

Open Ended

Explain why halogens are highly reactive and how their reactivity relates to their electron configuration.

Multiple Choice

Which property is NOT characteristic of noble gases?

• Highly reactive

• Full valence shell

• Gases at room temperature

• Low boiling points

Open Ended

How do you think understanding the periodic table and the vocabulary terms (such as principal energy levels, electron sublevels, and oxidation states) will help you in learning more about chemistry?