NAME ______Period ______Date ______
BASIC CHEMISTRY REVIEW: 2-1 & 2-2
1.Why were atoms given the name of “atom” which means “unable to be cut?”
2.What are the 3 basic parts of an atom, what are their charges, and where (in the atom) are they
found?
3.Which 2 parts of an atom are responsible for almost all of the mass of the atom?
1.2.
4.What is the overall charge of an atom?
5.What is the overall charge of the nucleus?
6a.How do you determine which number on the periodic chart is the Atomic Mass Number?
6b.What does the Atomic Number tell you?
7a.What is an element?
7b.How are elements represented or symbolized?
8.What is the smallest part of an element that is still that element?
9a.What is an isotope?
9b.Draw the 3 isotopes of Carbon. How are they similar? How are they different?
10.What makes an isotope radioactive?
11.List 4 uses for radioactive isotopes.
1.
2.
3.
4.
12a.What is a compound?
Give 2 examples. 1.
2.
13Explain how you know that a compound is not just a mixture of the compound-elements.
14.What information is contained in a chemical formula?
15.In a simplified 2-D model of an atom, what is the maximum number of electrons that fit on the first
energy level?
On the second energy level?
On the third energy level?
16.How many valence electrons does Calcium have?
17a.What is an ionic bond?
17b.Give an example of a compound formed by an ionic bond.
18a.What is a covalent bond?
18b.Give an example of a compound formed by an covalent bond.
19.What is a molecule?
20.Explain how a gecko can climb a wall and not fall off.
21.List 3 reasons why water is unique.
1.
2.
3.
22.Why is a water molecule considered polar?
23.Describe Oxygen’s charge and why it has that charge.
24.What is the result of the polarity of water molecules?
25.List and give an example of 2 special properties of water.
1.
ex:
2.
ex:
26.How is a mixture different than a compound?
Example of a mixture:
27a.What are the 2 types of mixtures that can be made with water?
1.
2.
27b.How are they different?
28.Define solute.
Example of a solute:
29.Define solvent.
Example of a solvent:
30.Water can react to form which 2 ions?
1.
2.
31a.Which pH has the same number of H+ ions as OH- ions?
31b.A pH of 13 will have more ______ions than a pH of 7.
31c.A pH of 4 will have more ______ions than a pH of 7.
32.Circle the pH that is the most acidic.259