The Elements Microviewer Activity

Directions: Fill n the blanks as you read the activity book and view the slides.

INTRO:

  1. Atoms are the ______of the universe.
  2. ______made up of only one kind of atom is called an ______.
  3. Everything on our planet, both ______and ______, is composed of combinations of elements.
  4. On our earth _____elements occur naturally.
  5. Most elements are found in combination with ______.
  6. An atom of a particular element contains a ______number of ______and ______.
  7. The number of ______(or electrons) is called the ______and is the basis of classification known as the ______.
  8. In this set, you will examine a few of the ______that can be found in their ______, uncombined form.

CARBON (DIAMONDS)Magnified (______)

  1. ______is a well-known form of the element, ______.
  2. It is produced under ______in geological formations called “pipes.”
  3. The diamond is the ______of all known substances.
  4. How many different color diamonds can you find in this slide? ______
  5. ______, another form of carbon looks quite different.
  6. The “ ______” in your pencil is mostly ______.
  7. If you touch pure graphite you will notice that it feels very ______.

COPPER Magnified (______)

  1. ______is usually found in rocks of volcanic origin.
  2. Notice the typical reddish leaf-like groups of cube-shaped ______.
  3. ______is widely used for electrical wiring.

GOLD Magnified ( ______)

  1. ______is a very rare element in the solar system.
  2. Gold characteristically is found on the ______as bright ______flakes and small pebbles.
  3. It is found in ______water. Most gold however is ______.

SILVER Magnified ( ______)

  1. ______is far ______rare than gold.
  2. Most silver is obtained as a by-product of ______, ______, and ______mining where it occurs with sulphur.
  3. Native ______is relatively rare, and is a prized collector’s item.
  4. Compare this slide with slides 1 and 2. Which does silver more closely resemble? ______
  5. Silver compounds are used for ______and for ______film.

SULPHUR Magnified (______)

  1. Native sulphur occurs in large beds of ______origin.
  2. Living organisms use the sulphur contained in certain ______and reduce it to its elemental form.
  3. Sulphur also is found as large ______in volcanic vents.
  4. Note the “______” color and pyramidal shape of the ______.
  5. The crystal is imbedded in a mixture of two minerals called ______and ______.
  6. Sulphur is soft, ______and burns to form a pungent gas called sulphur dioxide.
  7. Sulphur is used in the production of ______and ______.

MERCURY Magnified ( ______)

  1. ______usually occurs in combination with ______in an ore called ______.
  2. As you can see, mercury is a ______at room temperatures.
  3. Mercury can be found in regions of ______and hot ______.
  4. Because of its liquid state and silver appearance, it is sometimes called ______.
  5. Mercury is used in ______, certain ______and fungicides, and in dentistry. It is highly ______.

PLATINUM Magnified (______)

  1. Platinum is a very ______and ______element.
  2. Platinum and a number of closely related elements, ______, ______, and ______occur as natural, uncombined mixtures called ______.
  3. It is important in the chemical industry, where it is used as a ______.
  4. (A catalyst is a substance that changes the ______at which another substance is formed, but itself remains ______.)
  5. Can you see where the faces of the crystal have been rubbed down? ______This was caused by ______.

LEAD Magnified (______)

  1. This slide shows branches of globular masses having the characteristics “______” color of this element.
  2. As you might guess from its appearance, lead is a very ______, easily ______metal.
  3. It is also very ______.
  4. A lump of lead weighs approximately ______times that of the same volume of ______and 1.5 times that of ______.
  5. The ______of lead makes it useful as a ______shield against ______.
  6. Its ______use, however, is in ______storage ______.