NAME:
DATE:
CLASS:
Complete the chart.
Element
Xenon
Uranium
Chemical Symbol
Xe
U
Atomic Number
54
Atomic Mass
131.3
238.03
Mass Number
Protons
92
Neutrons
Electrons
7.
1. Nitrogen has 7 protons. How many electrons are
there? 7
2. How is the periodic table arranged? By
increasing atomic number
3. What is the relationship between the elements in
a column? Similar characteristics; same # of valence
electrons
4. What is the relationship between elements in a
row? valence electrons are all in the same energy
level and increase by1 electron each from left to
right.
5. What is the name for a column of elements on
the periodic table? Group or family
6. What is the name for a row of elements on the
periodic table? period
Give a Bohr model and Lewis Structure and the number of protons, electrons and neutrons for
Hydrogen. Protons = 1, Electrons = 1, Neutrons = 0, Symbol = H, Valence Electrons = 1
1st energy level has 1 electron
8. Give a Bohr model and Lewis Structure and the number of protons, electrons and neutrons for
Beryllium. Protons = 4, Electrons = 4, Neutrons = 5, Symbol = Be, Valence Electrons = 2
1st energy level has 2 electrons, 2nd energy level has 2 electrons.
9. Give a Bohr model and Lewis Structure and the number of protons, electrons and neutrons for Fluorine.
Protons = 9, Electrons = 9, Neutrons = 10, Symbol = F, Valence Electrons = 7
1st energy level has 2 electrons, 2nd energy level has 7 electrons.
10. Give a Bohr model and Lewis Structure and the number of protons, electrons and neutrons for
Potassium. Protons = 19, Electrons = 19, Neutrons = 20, Symbol = K, Valence Electrons = 1
1st energy level has 2 electrons, 2nd and 3rd energy levels have 8 electrons, and the 4th energy level
has 1 electron
11. What are valence electrons? The electrons in an element’s highest energy level. They determine
properties and how elements bond
12. Give the definitions of malleable. Can be hammered or rolled into flat sheets or other shapes.
13. Give the definition of ductile.
Can be pulled or drawn into a long wire
14. How many valence electrons do the noble gases have? 2 or 8. – the highest energy level is full.
15. How does the number of valence electrons affect the ability of elements to bond with other elements?
The # of Valence electrons determines whether the element gains electrons, loses electrons, shares
electrons or is unreactive
16. List the 3 particles contained in an atom and give the charge of each.
Protons +, Electrons -, Neutrons have no charge.
17. What are the GROUP names for groups 1,2 17 and 18.
a. 1: Alkali Metals
b. 2: Alkaline Earth Metals
c. 17: Halogens
d. 18: Noble Gases
18. Define metal. A class of elements characterized by physical properties: Shininess, malleability,
ductility, and conductivity
19. Define metalloid. An element that has the characteristics of both metals and nonmetals
20. Define nonmetal. An element that lacks most of the properties of metals.
21. When does an object have no kinetic energy?
When it is not in motion
22. What is the best synonym for potential energy?
Stored energy
23. What is the primary light source for all light energy on earth?
The sun
24. Kinetic and potential energy are the two types of energy that relate to :
Mechanical energy, motion
25. Which group on the Periodic Table contains the most reactive elements?
Group 1 the Alkali Metals
26. Which group on the Periodic Table contains the least reactive elements?
Group 18 the Noble Gases
28. Define and give an example of energy.
29. Define and give an example of electromagnetic energy
30. Define and give an example of light energy.
31. Define and give an example of mechanical energy.
32. Define and give an example of thermal energy.
33. Define and give an example of electrical energy.
34. Define and give an example of chemical energy.
35. Define and give an example of nuclear energy.
36. How can you distinguish between elements, compounds, and mixtures? Give a definition and at least 2
examples of each.
37. What is the difference between a heterogeneous mixture and homogeneous mixture?
38. What are the differences between physical and chemical properties? Give a definition for each and at least
2 examples.
39. What are the differences between physical and chemical changes? Give a definition for each and at least 2
examples.
40. What are the 4 states of matter?