Physical Science 5.2

Multiple Choice

What determines the atomic mass of an element?

• the natural distribution of isotopes and the atomic numbers of those isotopes

• the natural distribution of isotopes and the masses of those isotopes

• the mass of the isotope of the element that has the most neutrons

• the average number of protons in the element's nucleus

Multiple Choice

Which of the following is not characteristic of metals?

• ductile

• good electrical conductor

• typically solid at room temeperature

• brittle

Multiple Choice

Within a period of the periodic table, how do the properties of the elements vary?

• metalic characteristics increase from left to right

• metallic characteristics decrease from left to right

• reactivity increases from left to right

• reactivity decreases from left to right

Multiple Choice

In the modern periodic table, elements are arranged in order of increaseing atomic mass.

• true

• false