The Periodic Table

What information do all periodic tables tell you about an element?

• Atomic #, Symbol, Name, and Atomic mass

• Melting point, Boiling point, and Density

• Color, State at room temperature, and Reactivity

• Number of isotopes, Radioactivity, and Crystal structure

How are the elements on the periodic table arranged?

• By atomic #

• By alphabetical order

• By color

• By melting point

Which number on the periodic table is used to identify the element?

• Atomic #

• Mass number

• Group number

• Period number

Which number on the periodic table tells you the number of protons in an atom of an element?

• Atomic #

• Mass #

• Group #

• Period #

If an atom is electrically neutral, how can you use the periodic table to determine the number of electrons it has?

• Use the atomic #, because if electrically neutral the # of protons will equal the number of electrons

• Use the mass number, because it tells you the number of electrons directly

• Count the number of neutrons, as they equal the number of electrons in a neutral atom

• Look at the group number, as it always matches the number of electrons

Tags

NGSS.MS-PS1-1

Look at the periodic table samples provided. What other information can be included on a periodic table?

• State of matter, classification, group name, electrons per shell (Based on the ones included)

• Favorite color of the element, number of vowels in the name, inventor's birthday, atomic joke

• Height of the element, taste, sound it makes, favorite sport

• Most popular movie, number of pets, shoe size, favorite food

APPLY → Draw a small key to serve as a notation reference on your periodic table. Use hydrogen as your example and label what each part of the notation in the key tells you about the element.

• A small key on the periodic table shows the element symbol, atomic number, and atomic mass for hydrogen.

• A small key on the periodic table only shows the color of the element.

• A small key on the periodic table shows the melting and boiling points of hydrogen.

• A small key on the periodic table only shows the number of neutrons in hydrogen.

What is another name for 'groups'?

• Families

• Tables

• Periods

• Elements

Are the groups on the periodic table referring to the up and down columns or the left and right rows?

• Up and down columns

• Left and right rows

• Diagonal lines

• Individual elements

What does the group number tell you about an element?

• How many valence electrons it has

• Its atomic mass

• The number of neutrons

• Its melting point