Periodic Table of Elements

The identity of an atom can be found by using the

• number of protons

• number of electrons

• number of neutrons

• atomic mass

Tags

NGSS.MS-PS1-1

A portion of the periodic table is shown. Which pair of elements would have the same number of valence electrons

• Lithium and Beryllium

• Magnesium and Sodium

• Lithium and Sodium

• Magnesium and Lithium

Provided is a representation of the Periodic Table of Elements. When moving down a column on the periodic table which of the following increases?

• number of valence electrons

• melting point of the element

• possible number of bonds formed

• number of orbitals or shells

A portion of the Periodic Table is shown. Which element would have similar properties to Chlorine

• Fluorine

• Sulfur

• Phosphorous

• Arsenic

A simplified version of the Periodic Table of the Elements is provided. When moving down a column on this table which of the following stays the same?

• size of the atomic radius (number of orbitals)

• density of the element

• boiling point of the element

• number of valence electrons

If there are 8 protons what element does it identify?

• oxygen

• silicon

• sulfur

• nitrogen

Tags

NGSS.MS-PS1-1

What is the chemical symbol for Calcium?

• C
• Ca
• Cal

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

Tags

NGSS.MS-PS1-1

The number of neutrons in an atom can be found by

• adding the number of neutrons and protons together.

• adding the atomic mass and the atomic number.

• subtracting the atomic mass from the atomic number.

Tags

NGSS.MS-PS1-1

Nitrogen

• N
• Ni
• He
• G

Tags

NGSS.MS-PS1-1