6th Grade Science: The Periodic Table

Most of the elements in the periodic table are

• metals

• metalloids

• gases

• nonmetals

What is necessary for substances to burn?

• nitrogen

• oxygen

• helium

• carbon

Which one of the following tells the physical state of an element at room temperature?

• The atomic mass

• The atomic number

• The color of the chemical symbol

• The element name

Mendeleev arranged the elements by

• density

• increasing atomic number

• appearance

• increasing atomic mass

As you move across the periodic table (left to right) the properties of the elements ______.

• increase density

• change

• remain the same

• decrease density

The horizontal (across) row on the periodic table is called a(n)

• group

• family

• period

• atomic number

Transition metals are

• Good conductors of thermal energy

• More reactive than alkali metals

• Not good conductors of electrical current

• Used to make aluminum

The vertical (up and down) column of elements on the periodic table is called _________.

• period

• semi-conductors

• Chemical symbols

• groups or families

Mendeleev found that the properties of the known elements followed a pattern that repeated every

• 7 elements

• 5 elements

• 14 elements

• 10 elements

These metals react with water to form hydrogen

• alkali metals

• aluminum

• halogens

• argon