The Periodic Table

Which is the most common lanthanide?

• Lanthanum

• Cerium

• Praseodymium

• Mendeleevium

Select two of the most common Actinides:

• Thorium

• Protactinium

• Uranium

• Americium

Which scientist stated that Atoms consist of electrons?

• J.J. Thomson

• Mendeleev

• Rutherford

• Democritus

What was John Dalton's theory and what did it state?

• Atoms consist of subatomic particles

• Atoms are indivisible

• He was the one who created the cookie/ice cream model

• He experimented with the gold foil sheet

What was Rutherford's statement/theory?

• He had the chocolate chip model

• He stated that atoms of different elements have different masses

• He stated that atoms cannot be divided further

• He used the gold foil in order to see how the subatomic particles would react

The total number of protons & neutrons in an atom are called:

• Isotopes/atomic number

• atoms/atomic mass

• Isotopes/atomic mass

• Atoms/atomic theory

Mendeleev was:(check the periodic table)

• A chemist who sought to order the periodic table

• A chemist who predicted the element today known as "Barium"(103)

• A chemist who organizes the periodic table based on reactivity

• A chemist who got an element named after him (mendelevium 101)

What is the chemical symbol?

• Abbreviation for chemicals

• neutrons + protons

• protons

• electrons

Are ALL Actinides found in the lab?

• Yes

• No

What's the atomic number?

• # of protons

• # of electrons

• # of neutrons & protons

• # of neutrons