Download Periodic Table Study Guide

Unit 3 Study Guide –KEY
1. Who is given credit for creation of the Periodic Table?
Dmitri Mendeleev
2. When he was putting the table together, what characteristics did he use to place the elements in order?
Rows - Increasing mass
Columns – Similar properties
3. What is the definition of atomic mass?
Individual Atoms: Number of protons plus number of neutrons.
Elements: Weighted average of the masses of the isotopes.
4. What units do you put on atomic mass?
amu (Atomic Mass Units)
5. Does the atomic number increase or decrease as you move from left to right? How much does it change
from one element to the next?
Increases by 1 for each element as you move from left to right
6. The vertical columns on the Periodic Table are called what?
Groups or Families
7. Why do elements in the same group have similar chemical properties?
Elements in the same group have the same number of valence electrons in their outer shell.
8. The horizontal rows are called what?
Periods
9. What states of matter are represented by the metals at room temperature (solid, liquid, and/or gas)?
Solid and liquid (all but mercury are solids)
10. There are two groups (families) on the Periodic Table that are considered the MOST reactive, what are they
(give name and number)?
Group 1 (IA) – Alkali Metals
Groups 17 (VIIA) – Halogens
11. Using your answer from question 10, how many valence electrons does each of those groups (families)
have?
Group 1 (IA) has 1
Group 17 (VIIA) has 7
12. Na is a very reactive element in Period 3, what other elements in Period 2 would be considered reactive?
Lithium (group 1 – IA) and Fluorine (group 17 - VIIA)
13. Every element in the Carbon group (family) has how many valence electrons?
4
14. Looking at Group 2 (IIA) which element would be the MOST reactive?
Radium because reactivity increases for metals as you go down the group.
15. If a reaction is going to take place, which Halogen would you expect to react the fastest?
Fluorine because reactivity increases for non metals as you move up the group
16. What element do all LIVING creatures contain?
Carbon
17. List 4 properties of metals
a. good conductors (heat and electricity)
b. solids at room temperature (except mercury)
c. malleable and ductile
d. luster
17. If K reacts very violently in water, what you expect Fr to do? Why?
React even more violently – Reactivity increases down a period
B
A
3
1
6
2
4
5
7
18. Label the numbers and letters in the above Periodic Table
1 – Alkali Metals
B – Non-metals
2 – Transition Metals
C – Metalloids
3 - Halogens
6 - Alkaline Earth Metals
7 – Noble gasses
A- Metals
19.
The majority of the Periodic Table is made up of what kind of element?
metals
20.
21.
Common name of
group
Formal group
Number
Number of
Valence Electrons
Alkali Metals
Alkali Earth Metals
Halogens
Noble gases
1
2
17
18
1
2
7
8
Reactivity
(low, medium or
high)
High
Medium
High
Low to none at all
22. Match the following element characteristics (V, W, X, Y, Z)
V- a gas, does not react chemically with any element
W- a solid, high density, good conductor of electricity
X- brittle solid, poor conductor of heat and electricity
Y- brittle solid, poor conducts electricity somewhat
__W___. A
____X_. B
___Y__.C
___V__.D
Metals
Non-Metals
Metalloids
Noble Gas
Representative
Elements
Li, Na, K
Be, Mg, Ca
F, Cl, Br
He, Ne, Ar