Study Guide for Chapter 4 Test

Study Guide for Chapter 4 Test

1. Who developed the earliest model of the atom? Draw a picture of this earliest model.

2. What are electrons? Who discovered them?

3. Where is the nucleus located? What do you find inside of the nucleus?

4. What two pieces of the atom did Ernest Rutherford discover?

5. Draw an example of a Bohr’s model and a Lewis Structure for the element Sulfur:

6. In the modern atomic model where do you find the protons, neutrons and electrons? (Explain the way they are all arranged and their different charges)

7. What are valence electrons and where do you find them in an atom? What is the importance of valence electrons?

8. What does the atomic number represent?

9. What does the atomic mass represent? How do you find the number of neutrons in an element?

10. What is an isotope?

11. How did Mendeleev arrange the elements in the periodic table? How are they arranged in the modern periodic table?

12. If an element has an atomic number of 37 and 48 neutrons fill in the blanks:

____ Protons ____ Electrons ____ Atomic Mass ____Symbol

______Element

13. What are 4 or more of the properties substances can be classified by?

14. The horizontal rows in a periodic table are called ______

The vertical Columns in a periodic table are called ______or ______

15. What is another term for a metalloid? What are the properties of these types of elements?

16. What are the three main sections of the periodic table?

17. On the left side of the zig-zag are the ______

The elements bordering the zig-zag are the ______

18. Circle all the properties that apply to metals:

a. Solid at room temperature except Mercury

b. Good conductors of heat

c. Semi-conductors

d. Some are magnetic

e. Ductile

19. List 3 or more properties of non-metals:

20. The gradual wearing away of metal due to a chemical reaction is called ______

21. Circle the letter of each sentence that is true about Alkali metals:

a. They are never found as uncombined elements.

b. They react with other elements by losing one electron

c. They are brittle, or non-malleable

d. They are semi-reactive

22. Are the transition metals more or less reactive than the metals in group 1 and 2? ______

23. How many valence electrons do the alkaline earth metals have? ______

24. What group is the most reactive with group 1?

25. What are some properties of non-metals?

26. What are the properties of inert gases?