Exam 11: The Chemical Elements

A solution that contains more dissolved solute than its normal solubility is called a(n) ______________ solution.

What scientist discovered more elements than any other person?

The amount of energy necessary to remove an electron from an atom is called that atom's ______________.

Group ______________A elements have two valence electrons.

In a given period, the element of Group ______________ has the lowest ionization energy.

The most reactive of all elements is

Chloroform can be broken down by chemical means but not by physical methods. Thus chloroform is

An element that tends to gain or share electrons during chemical reactions is classified as a(n) ______________.

The vertical columns of elements in the periodic table are called

Which of the following elements has the lowest ionization energy?

A nonchemical combination of two or more substances in variable proportions is called

The vertical columns in the periodic table are called ______________.

O₃ and O₂ are the two ______________ of the element oxygen.

The preferred name for N₂O (commonly called nitrous oxide) is

A gold-plated (gold-covered) piece of jewelery, such as a bracelet, is

In 1661, who developed a definition of element that made the concept subject to laboratory investigation?

H₃PO₄ is the formula for ______________acid.

An atom that has more electrons than protons is a ______________ ion.

The symbol for copper is

The chemical properties of calcium and strontium are similar because both