Exam 11: The Chemical Elements

How many elements occur naturally on Earth?

______________ are substances that cannot be decomposed by chemical processes.

The chemical properties of chlorine and bromine are similar because both

The element ______________ was the gas used in the Hindenburg.

In a supersaturated solution,

About 85% by mass of Earth's core is composed of the element(s)

The horizontal rows of the periodic table are called ______________.

Homogeneous mixtures are those mixtures that have variable but ______________ composition.

An equilibrium between solute dissolving and solute crystallizing is characteristic of which of the following solution types?

The element ______________ displays some chemical properties of both Group 1A and Group 7A elements.

A bubble-producing soda is an example of

Which of the following Period 4 elements has the largest atom?

Which of the following Group 1A elements has the largest atom?

Atoms of which group of elements have seven electrons in the outer shell?

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

The alkali metals have ______________ valence electron(s).

A(n) ______________ is a substance composed of two or more elements chemically combined in a definite, fixed proportion by mass.

The second most abundant element in the Earth's atmosphere is

Elements in which the outer shell contains 8 electrons are known as the ______________.

The symbol for tungsten is