111Chap2
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ACROSS
1. A substance
containing 2 or more
elements bonded
together..
5. Class of elements
that are dull and
brittle.
7. Cannot be broken
into simpler
substances.
8. Type of tube used in
the discovery of
electrons. (2 words)
14. Positively charged
ion.
15. This subatomic
particle determines
the isotope.
16. A group of bonded
atoms that are a
unit separate from
other nearby
atoms.
17.
#protons+#neutrons
(2 words)
DOWN
1. Law of mass ___.
2. Class of elements
that are good
conductors.
3. Elements in this
portion of the
periodic table have
progressively
different properties.
4. ___ ___=#protons (2
words)
6. Protons and neutrons
are in the ___ of
atoms.
9. Two or more
substances combined
but not bonded.
10. First subatomic
particle discovered.
11. Subatomic particle
with a positive
charge.
12. Smallest particle of
an element.
13. A column of
elements on the
periodic table.