Pretest

Question 1

Which element is a halogen?

Revolt · Accepted Answer

bromine

Question 2

Who wrote the first modern chemical textbook?

Revolt · Accepted Answer

Antoine Lavoisier

Question 3

Which scientist established the law of octaves?

Revolt · Accepted Answer

John Newlands

Question 4

Which element is placed in the same period as ruthenium but has a higher atomic number than it?

Revolt · Accepted Answer

silver

Question 5

How was the work of Newlands similar to that of Mendeleev on the periodic table?

Revolt · Accepted Answer

They both arranged the elements in order of increasing atomic mass.

Question 6

How did Moseley establish a more accurate periodic table?

Revolt · Accepted Answer

by arranging the elements according to atomic number instead of atomic mass

Question 7

What is the chemical symbol for magnesium?

Revolt · Accepted Answer

Mg

Question 8

Moseley made revisions to the periodic table that resolved some of the problems with Mendeleev’s version. Which of these was a result of his revisions to the periodic table?

Revolt · Accepted Answer

The revised periodic table could account for variations resulting from isotopes.

Question 9

Which is another name for groups of elements?

Revolt · Accepted Answer

families

Question 10

Who is credited with creating the first periodic table?

Revolt · Accepted Answer

Dmitri Mendeleev

Pretest Answers

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