Atoms/Periodic Table

Which is classified as an element?

• Sodium Chloride

• Hydrogen

• Aluminium

• Acetic ACid

Which particle in the chart above would represent an electron in an atom?

• A

• B

• C

What is the name of the element that is shown in the diagram above?

• Hydrogen

• Nitrogen

• Carbon

• Neon

There are a number of characteristics that can be used to distinguish metals from nonmetals. A student compiles characteristics of four materials (W, X, Y, and Z) the table. above. Which material is most likely metal?

• W

• X

• Y

• Z

How many neutrons are present in Silicon based on information shown above ?

• 28

• 12

• 40

• 14

Which element is the least reactive ?

• 1

• 2

• 3

• 4

Which element is the most reactive ?

• 1

• 2

• 3

• 4

Which 2 elements would be most closely related to Na?

• Be and H

• Mg and K

• Ca and Rb

• Li and K

An engineer needs a hard, non-magnetic semiconductor. Which element would best fit this description?

• Aluminium (Al)

• Carbon (C)

• Silicon (Si)

• Silver (Ag)

Which statement best explains how the periodic table is organized?

• increasing atomic number from left to right

• increasing number of neutrons from left to right

• decreasing atomic mass number from left to right

• decreasing number of electrons from left to right