5th Grade Elements and the Periodic Table

Are materials formed by atoms of the same type.

• Compounds

• Elememts

Elements have unique chemical and physical properties.

• True

• False

In the chemical symbol the _______ indicates how many protons an atom has.

• Atomic mass

• Atomic number

• Sumbol

• Name

Complete the element's information.

Write the correct part of the chemical symbol. (Write your answer in lowercase letters)

The _______ indicates the total mass of the protons and neutrons combined.

• Atomic mass

• Atomic number

• Symbols

• Name

Complete the element's information.

Write the correct part of the chemical symbol. (Write your answer in lowercase letters)

He used the information discovered about elements to design a table in which he organized the elements in order of atomic mass.

• 33 Thompson

• Dimitri Mendeleev

• Albert Einstein

• Galileo Galilei

He noticed the _______ repetition of properties and placed the elements with similar properties in columns to create the periodic table of elements.

• Single

• Stable

• Periodic

The periodic table is organized in columns called__________and rows called _____________.

• groups, periods

• atomic number, atomic mass

• simple, comples

There are__________groups and________periods.

• 20, 5

• 18, 7

• 17, 7

The letters in the periodic table represent the _________of elements.

• mass

• volume

• symbol

The periodic table is organized by each element's _______

• atomic mass

• atomic number