Atomic Theory And Subatomic Particles (Page 2 of 4) in pdf

Unit 4 Review Packet

Part 1 – Atomic Theory, Subatomic Particles, and the Periodic Table

Periodic Table: Using your book (Chapter 1, Sec. 3 (pages 16-20), answer the following

questions about the Periodic Table.

1. Where are metals found on the Periodic Table? What properties do these elements have? (Use

Figure 12, page 17 to help you with location)

2. Where are non-metals found on the Periodic Table? What properties do these elements have?

3. Where are metalloids found on the periodic table? What properties do these elements have?

4. If you find an element in nature in its pure elemental state, what can you infer about the

element’s chemical reactivity? How can you tell whether the element is a metal or a

nonmetal?*

5. Suppose element X is a poor conductor of electricity and breaks when hit with a hammer.

Element Z is a good conductor of heat and electricity. In what area of the periodic table does

each element most likely belong?*

6. Identify the following elements as metals, nonmetals or metalloids:

a. Ca

b. Cl

c. Y

d. As

e. H

f. C

g. B

h. Al

7. Identify the group number and period number for the elements in question #6.

8. What are rows in the periodic table called? What are columns called? Which elements are

more similar, those in the same row or the same column?

9. Which elements are unreactive?

Atomic Theory:

1. State, in your own words, a description of Dalton’s model of the atom. Be sure to include ALL

five ideas that he included in his model.

2. What three laws can be explained by Dalton’s Theory? Write each law in your own words as

part of your answer.

3. Explain the parts of Dalton’s model that were correct. Explain the parts of Dalton’s model that

were incorrect.

4. Three different compounds containing potassium and oxygen are compared. Analysis shows

that for each 1.00 g of O, the compounds have 1.22 g, 2.44 g and 4.89 g of K, respectively. Show

how these date support the law of multiple proportions. *

5. What other discoveries changed the model of the atom and formed the Modern Atomic

Theory? (List the contributions of Thomson, Rutherford, Millikan, and Chadwick)

6. What is an atom?

7. What 2 regions make up an atom?

Atomic Theory And Subatomic Particles Page 2