Name: ___________________________________ Period:___ Date:______
Dekalb Reads Assignment : 3.3 (A) [of ABC]
Families of elements
HOW ARE ELEMENTS CLASSIFIED & METALS
Read pages 86-88 and answer the questions
DUE AT THE END OF PERIOD
What do members of a family in the periodic table have in common? Why?
In to what 2 main classes elements are classified?
Enlist the properties of most metals.
Where are the non-metals located in the periodic table? Which element has exception?
In what physical states do non-metals exist?
Describe solid non-metals.
Some non-metals can conduct electricity under certain conditions. What are they called?
How many different kinds of metals are there?
How many groups of metals are located at the left of the periodic table?
Describe the properties of sodium.
Why is sodium stored in oil?
Why is an atom of alkali metal very reactive?
Why are alkali metals not found in nature as elements?
What is sodium chloride?
Define metal.
Define nonmetal.
Define semiconductors.
Name the highly reactive metallic elements. Where are they located in the periodic table?
Where are the compounds of calcium found?
How many valence electrons do alkaline earth metal elements have?
What happens when the valence electrons of a calcium atom are removed?
What makes up the hard shell of many sea animals?
What happens when the sea animals having calcium compounds die?
What kind of materials is lime stone and marble? What is their use?
Give an example of lime stone structure.
How does a coral reef form?
How are the coral reefs helpful for fish?
What provides strength to your bones and teeth?
Name the lightest metal.
Write a use of Magnesium.
Name two Magnesium compounds used as medicine.