Lab Report

Topics: Atom, Electron, Proton Pages: 3 (623 words) Published: February 26, 2013
Inorganic Chemistry
1.A subatomic particle with a single positive electrical charge is protons. 2.A subatomic particle with a single negative electrical charge is electrons. 3.A subatomic particle which is electrically neutral is neutrons. 4.The nucleus of an atom is made up of _protons_ and _neutrons. 5.The number of electrons forming a charge cloud around the nucleus is (pick one of the following) greater than; equal to; smaller than the number of protons in the nucleus of the atom. 6.The atomic number of potassium (3919K) is_19_. This means that a potassium atom has _19 protons and 19_ electrons. 7.What is the atomic mass of K? ___39________.

8.The atomic mass represents the number of _protons_ and _neutrons. 9.The isotope 14C differs from 12C in that 14C has (pick one of the following) more; less; same) neutrons.
10. Electrons are arranged in electron shells. The electron shell closest to the nucleus has a maximum capacity of _2___ electrons, whereas the second shell holds a maximum of _8__ electrons for elements in Biology. 11.The outermost shell is referred to as the __valance__ shell. The electrons in the outermost shell are referred to as the _valance_ electrons. 12. Trick Question: How many electrons does 42He need to be stable? _It is balanced__ 13.How many electrons does 3919K need to be stable?___________ 14.How will K most likely become stable (what does it need?) __¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬__ 15.Ions are atoms that have (pick one): gained or lost; shared one or more electrons into or form their valence shells. 16.A cation is an atom that has (gained or lost) an electron. (Pick one) 17.An anion is an atom that has (gained or lost) an electron (Pick one) 18.When a cation bonds with an anion, that bond is referred to as a/an _ionic_ bond. 19.Circle the molecules that are classified as compounds (H, H2, H2O, C6H12O6, N2) 20.Find the name for each element using the periodical table from the...
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