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Fall Final Review


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2.More than 80% of the elements are of what type?
7.At room temperature, most elements are in what state?
8.During nuclear fission, the subatomic particle that is released is a(n) __?
9.A horizontal row of elements on the PT.
11.Protons and neutrons are found in the ___ of the atom.
13.A change that does not affect the identity of a substance.
16.Has properties of both metals and nonmetals.
17.A covalent bond tends to form between two ___ elements.
18.A vertical column of elements.
21.Total number of protons in an atom.
23.Reactions between two atoms involve ____ electrons.
28.Carbon-12 and Carbon-14 are examples of ?
29.First subatomic particle discovered.
31.The joining of two smaller H nuclei to form a He nucleus.
32.The most difficult radiation to block is ___?
1.____ spaces were left in Mendeleev's PT for undiscovered elements.
3.Groups 3-12 on the periodic table are known as the ___ elements.
4.Two oppositely charged particles form an ___ bond.
5.Na2SO4 represents a chemical _____.
6.In beta decay, the atomic number ___ by one but the mass number remains the same.
9.States that the properties of the elements repeat by a pattern if arranged in increasing atomic number order.
10.A Lewis Structure represent valence electrons as ___ placed around a chemical symbol.
12.One substance completely dissolved in another.
14.Matter that cannot be seen even with a microscope is said to be?
15.The time required for 1/2 of a radioactive sample to decay.
19.A mixture of two or more metals.
20.A bond between two element from the same family would most likely be this type.
22.Name of the family of unreactive elements.
24.Compared to a proton the charge of an electron is equal but ___?
25.The splitting of a nucleus.
26.Two protons and two neutrons make up a(n) __?
27.Eight valence electrons.
30.Atom that has gained or lost electrons and has a charge.

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