malvino multiple choices

a. With a cold-solder joint

@b. With a solder bridge

c. By disconnecting it

d. By opening it

23. Derivations are

a. Discoveries

b. Inventions

@c. Produced by mathematics

d. Always called theorems

24. Laws are proved by

a. Definition

@b. Experiment

c. Mathematics

d. Formulas

25. Definitions are

a. Man made

b. Invented

c. Made up

@d. All of the above

Chapter 2

1. The nucleus of a copper atom contains how many

protons?

a. 1

b. 4

c. 18

@d. 29

2. The net charge of a neutral copper atom is

@a. 0

b. +1

c. -1

d. +4

3. Assume the valence electron is removed from a

copper atom. The net charge of the atom becomes

a. 0

@b. + 1

c. -1

d. +4

4. The valence electron of a copper atom experiences

what kind of attraction toward the nucleus?

a. None

@b. Weak

c. Strong

d. Impossible to say

5. How many valence electrons does a silicon atom

have?

a. 0

b. 1

c. 2

@d. 4

6. Which is the most widely used semiconductor?

a. Copper

b. Germanium

@c. Silicon

d. None of the above

7. How many protons does the nucleus of a silicon atom

contain?

a. 4

@b. 14

c. 29

d. 32

8. Silicon atoms combine into an orderly pattern called a

a. Covalent bond

@b. Crystal

c. Semiconductor

d. Valence orbit