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Go to http://www.webelements.com/webelements/index.html for a periodic table that supplies a comprehensive collection of facts on each element, and includes photographic samples.

Go to http://chemserv.bc.edu/web_elements/index.html for another on-line informative periodic table.

Elements/Compounds/Mixtures Review

1. Elements are the _________________ substances because they are made only of _______________ atoms, and _________(can, can not) be broken down into simpler substances by chemical means.

2. Berzelius first used ________________ for the elements, instead of writing the names.

3. A SYMBOL of an element means several things:
   1. An ____________________________ of the element’s name.
   2. A representation of one __________ of the element.
   3. A representation of one __________ of atoms, or 6.022 x 10²³ atoms, known as ________________ Number.

4. The symbol of an element may have only ONE _________________ letter.  If an element has two letters, the second letter must be ____________________.

5. The eleven GAS elements are:
   1. ________________________
   2. ________________________
   3. ________________________
   4. ________________________
   5. ________________________
   6. ________________________
   7. ________________________
   8. ________________________
   9. ________________________
   10. ________________________
   11. ________________________

6. The two LIQUID elements are:
   1. ________________________
   2. ________________________

7. Ten elements having a ONE-LETTER SYMBOL are:
   1. ________________________
   2. ________________________
   3. ________________________
   4. ________________________
   5. ________________________
   6. ________________________
   7. ________________________
   8. ________________________
   9. ________________________
   10. ________________________

8. Elements are the building blocks of ____________________ substances.

9. There are about ________(#) different natural and man-made elements.

10. Elements from # ______ to #_______ are NATURAL elements.

11. The element _______________ (#_____) is the LIGHTEST element, _________________(#______) is the HEAVIEST natural element, and ____________________(#______) is the first MAN-MADE element on the periodic table.

12. METAL elements have the following features in common:
    1. They are found on the __________ side of the zig-zag line on the periodic table.
    2. They have a __________ or can be polished to a shine.
    3. They conduct _______________________ and _____________________ quite well.
    4. They are _______________ or can be pulled into a wire, and are __________________ or can be hammered into different shapes.

13. NONMETAL elements have the following features in common:
    1. They are found on the ______________ side of the zig-zag line
    2. They are ______________ or do not have a metallic shine.
    3. They do not conduct __________________, but will melt or shatter.
    4. They do not conduct ___________________, although carbon in the form of _______________ is an exception.

14. The Earth has a magnetic field around it due to the presence of the metal elements ______________ and ________________ in its core.

15. The atoms of all COMPOUND substances are __________________(physically, chemically) united, and can be separated ONLY during a _______________ _______________.

16. A COMPOUND is a substance made from atoms of ________(#) or more different _______________.

17. A COMPOUND can NOT be broken down or separated into its elements by ________________ means, such as by ________________, ___________________, _________________, or _________________.

18. Sugar, C₆H₁₂O₆, is a COMPOUND because it has a DEFINITE _______________, which means it has a definite ___________________ of elements and a definite _______________________ of those elements.

19. A MIXTURE is made by _______________(physically, chemically) combining two or more substances, and CAN be separated into its individual ingredients by simple methods such as by _______________, ____________________, or ___________________.

20. In a MIXTURE, two substances can be combined in ANY __________________.

21. The NOBLE GASES are elements that do not _______________ with other elements, so are considered to be ____________________.

22. _____________________ is the last NATURALLY made element on the Periodic Table of elements.

23. Substances that are ABOUT TO REACT with each other are known as ____________________, and are written on the __________ side of the arrow.

24. Elements that TOUCH the “zig-zag” line are called ____________________, and under certain conditions behave as _____________ or _________________.

Directions:  Circle the correct answer.  There may be MORE THAN ONE CORRECT ANSWER.

1. Elements in the LIQUID state:
   1. Fluorine
   2. Iodine
   3. Chlorine
   4. Bromine

2. Elements in the GAS state:
   1. Potassium
   2. Argon
   3. Neon
   4. Iodine

3. Elements that are METALS:
   1. Bismuth
   2. Sulfur
   3. Potassium
   4. Sodium

4. Elements that are NON-METALS:
   1. Fluorine
   2. Iodine
   3. Carbon
   4. Hydrogen

5. Elements that are MALLEABLE:
   1. Nitrogen
   2. Zinc
   3. Potassium
   4. Carbon

6. Elements that CONDUCT ELECTRICITY:
   1. Silver
   2. Aluminum
   3. Phosphorus
   4. Tungsten

7. Elements belonging to the NOBLE GASES:
   1. Chlorine
   2. Krypton
   3. Radon
   4. Hydrogen

8. The LAST NATURALLY-MADE element is:
   1. Plutonium
   2. Thorium
   3. Uranium
   4. Einsteinium

9. The elements making up the central CORE of the Earth are:
   1. Iron
   2. Lead
   3. Nickel
   4. Titanium

10. The atomic number of the FIRST MAN-MADE element is:
    1. 92
    2. 93
    3. 102
    4. 103

11. Elements with ONE-LETTER symbols:
    1. Nitrogen
    2. Gold
    3. Iodine
    4. Potassium

12. Elements that are INERT:
    1. Oxygen
    2. Chlorine
    3. Helium
    4. Hydrogen

13. Elements that are METALLOIDS:
    1. Silicon
    2. Antimony
    3. Sulfur
    4. Iron

14. Elements with a LATIN NAME:
    1. Sodium
    2. Potassium
    3. Iron
    4. Aluminum

Directions:  Circle the symbol for the following elements:

1. copper -  Co   C    Cu    Cp

2. iron  -  Ir    In     FE    Fe    Fr

3. aluminum  -  Au    Am    Al    AL

4. mercury  -  Me    Mu    He    Hg

5. tin  -  S    Ti    Tn    Sn

6. carbon  - Ca    C    Co    Cr

7. silver  -  Ag    Au    S    Si

8. fluorine  -  Fu    Fl    F    Fr

9. potassium  -  Pt    K    P    W    Ka

10.  chlorine  -  C    Ch    Cr    Cl

11. magnesium  -  Mg    Mn    M    Me