(Savvas 5.1) Organizing the Elements Quiz

Is the following sentence true or false? The first elements to be identified were mainly gases.

• True

• False

As the number of known elements grew, so did the need to organize them into groups based on their .

• atomic number

• properties

• mass

• density

Circle the letter of each category that the French chemist Antoine Lavoisier used to classify elements.

• a. gases

• b. metals

• c. liquids

• d. nonmetals

Is the following sentence true or false? Mendeleev needed to organize information about 63 elements.

• True

• False

Mendeleev’s strategy for classifying elements was modeled on a(n) .

• game of cards

• chess game

• puzzle

• board game

Choose the letter(s) of each type of information Mendeleev knew about each element.

• a. name

• b. number of protons

• c. relative mass

• d. properties

Mendeleev arranged the elements into rows in order of __________ so that elements with similar properties were in the same column.

• atomic number

• atomic mass

• electronegativity

• density

Is the following sentence true or false? A periodic table is an arrangement of elements in columns, based on a set of properties that repeat from row to row.

• True

• False

Mendeleev published the table above in 1872. Why did Mendeleev leave some locations in his periodic table blank?

• He was unsure about the properties of some elements.

• He predicted the existence of undiscovered elements.

• He made a mistake in his calculations.

• He wanted to leave space for future scientists to fill in.

Choose the letters of two elements that have similar properties.

• zinc (Zn)

• chlorine (Cl)

• nitrogen (N)

• bromine (Br)