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Study Guide Answers

1.     The basic building blocks of all things are: a.) spectrons b.) molecule c.) atoms d.) bricks
     c.) atoms
2.     Individual atoms are not visible to the naked eye. True or false?
     true
3.     Name one kind of atom used to protect iron atoms from rusting.
     zinc, cadmium, or chromium
4.     In addition to its light weight, what makes aluminum a good choice for airplane construction?
     It is strong.
5.     How is gold made stronger, so that it can be used in rings and in other jewelry?
     Atoms of other elements are mixed with it.
6.     How many basic kinds of atoms compose all things on earth?
     92
7.     Diamonds are composed of atoms of: a.) diamantine b.) oxygen c.) hydrogen d.) carbon
     d.) carbon
8.     Protons and neutrons are both a lot larger than electrons. True or false?
     true
9.     What is the collection of protons and neutrons in the center of the atom called?
     the nucleus
10.     Scientists can split atoms into atomic pieces, but they cannot create atoms that do not exist in nature. True or false?
     false
11.     All molecules have at least how many atoms? a.) two b.) three c.) five d.) six
     a.) two
12.     Which deadly atom combines with sodium to form common table salt?
     chlorine
13.     The key to atoms joining to form molecules lies with the : a.) spectrons b.) electrons c.) protons d.) neutrons
     b.) electrons
14.     Two oxygen atoms cannot share electrons with one another. True or false
     false
15.     The bubbles in soft drinks consist of molecules of: a.) carbon monoxide b.) carbon dioxide c.) iron oxide d.) ozone.
     b.) carbon dioxide
16.     What atoms join to form water?
     hydrogen and oxygen
17.     What is the proper name for rust?
     iron oxide
18.     Some atoms are composed in such a way as to almost never form molecules. True or false?
     true
19.     All living things have individualized molecules of __________________ .
     DNA
20.     The molecules of living things are less complicated than those of minerals. True or false?
     false
© Educational Video Network, Inc. 2005 - www.evndirect.com
Your leading source for curriculum-based educational videos and DVDs.