Download Atomic Structures Study Guide

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Due Date__________
Date_______________
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Atomic Structure Study Guide
1). Fill in the names of the atomic particles that show the property described.
a. ____________________ -positively charged particle.
b. ____________________ -neutral particle.
c. ____________________ -negatively charged particle.
d. The ____________________ is almost two thousand times larger than the ____________________.
e. The ____________________ has the same mass as the ____________________.
Atomic models are used to show what the atom looks like because an atome is too small to see. In this class
we use Bohr’s model of the atom because it represents the behavior of the atom and is fairly easy to
understand. Remember that the Bohr model shows the nucleus surrounded by electrons in their electron
orbitals. Below is a diagram of a Helium atom using Bohr’s model.
2). Complete the following statements by unscrambling the letters in the blanks.
a. The center part of the atom is the UECLUNS ____________________.
b. Although the Bohr Model shows electrons as being in orbitals around the
nucleus, they are actually in an TECLENOR DOULC ____________________
____________________ that surrounds the nucleus.
c. Protons and RENOUTNS ____________________ are found in the nucleus.
d. The nucleus is positively charged because it contains SNOROPT. ____________________
e. There is a force of attraction between the TOVIIPE ____________________ nucleus and
the VATGIEEN ____________________ electron orbitals.
3). Complete the sentences by filling in the blanks with the correct words.
a. The positive charge of a nucleus is +7. The negative charge that can neutralize
it is ____________________.
b. In an atom, the number of protons in the nucleus is called the ____________________.
c. The number of electrons in the electron orbitals is the same as the number of
____________________.
d. The atom is electrically ____________________, even though it contains positive and
negative charges.
e. Each element can be identified by its ____________________.