Periodic Chart

Which statement best explains how periods on the periodic table are organized?

• increasing atomic number from left to right

• increasing number of neutrons from left to right

• decreasing number of electrons from left to right

• decreasing atomic mass number from left to right

Which of the following pairs of elements would most likely react WITH each other?

• Na & Cl

• H & He

• K & Cs

• Ne & Ar

Tags

NGSS.MS-PS1-2

Which element is least likely to combine with another element to form a molecule?

• Chlorine (Cl), a halogen

• Iron (Fe), a metal

• Neon (Ne), a noble gas

• Silicon (Si), a metalloid

Sodium reacts with water. Which element is most likely to have a similar effect to sodium if it is exposed to water?

• Carbon

• Oxygen

• Lithium

• Argon

Tags

NGSS.MS-PS1-2

Which best describes elements that are shiny, malleable, ductile, and good conductors of heat and electricity?

• halogens

• metals

• metalloids

• nonmetals

How do you know that potassium is highly reactive?

• It conducts heat.

• It conducts electricity.

• It is a soft and shiny metal.

• It has one valence electron.

Which of these elements has an electron structure most similar to that of element X?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What group on the Periodic Table contains the elements of the alkaline earth family?

• 1

• 2

• 17

• 18

The elements high lighted in yellow are

• Alkali metals

• Transition metals

• Halogens

• Noble gases

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers