2.  These conduct heat and electricity well and are malleable.  Metals  This is a pure substance made of only one kind of atom.  Elements  This property describes something’s ability to be bent or rolled into sheets.  Malleability  These do not conduct heat or electricity, they are not shiny or malleable.  Non-metals

3.  This is a table of elements arranged by their atomic number.  The Periodic Table of Elements  What is the most abundant element in the universe?  Hydrogen  Where does it come from?  The Stars  How many columns are in the periodic table?  18  What percent of elements are metals?  75%  What is the process of joining Hydrogen nuclei with other subatomic particles to form new elements called?  fusion

4.  In 1869 Dmitri Mendeleev placed the elements into a table based on their…  Atomic mass  What are the only two elements that are liquid at room temperature?  Mercury and bromine  The rows of the periodic table are called….  Periods  The elements in periods have similar arrangements of…  Electrons

5.  The columns of the periodic table are called…  Groups or families  Elements in the same family have similar…  Properties or reactions  What is the only element that does not fit into any family?  Hydrogen  Name one element that bursts into flame when placed in water.  Potassium, sodium, lithium, rubidium, cesium, francium  On the periodic table there is a dark zig-zag line. Elements to the left are…  Metals  While elements to the right are…  Non-metals

6.  What is the name of the least reactive family of elements?  The Noble Gases  How many elements are known of today?  118  How many of those occur in nature?  90 Make sure to study for this quiz! It will mostly be fill in the blank. Mercury Video