Preparation
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1. Known as NaCl or Sodium Chloride.
2. A compound known as H20. It is important
to sustain life on Earth.
3. It is a way of listing the elements. It shows
information about a certain element that
was systematically arranged.
4. __________________ are formed when two or
more elements are combined.
5. He organized the elements in order of
increasing atomic number.
6. combination of elements and/or compounds
required as an essential nutrient to
organisms to perform functions necessary
for life.
8. ____________ are the building blocks for all
the rest of the matter in the world.
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Across:
7. _______________________ became known as
one of two scientists who created the first
version of the periodic table of elements.
He managed to predict the properties of
elements yet to be discovered.
9. It is a type of matter which exists in its
most basic or purest form and cannot be
broken down further.
10. It is essential in the air we breathe. The
second most abundant gas in the
atmosphere.
11. It is the most abundant gas in the Earth's
atmosphere.
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