Electrical craft helper
Comprehensive
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1. a molecule of matter can be divided chemically into smaller
particles called?-
Answer: atoms
2. matter consisting of all the same kind of atoms is called an?
Answer: element
3. matter consisting of two or more different kinds of atoms is called
a? Answer: compound
4. the negative charge of a single electron is called a? Answer: unit
electrical charge
5. most of the mass of an atom is in the? Answer: nucleus
6. when an atom gains an electron, it is called? Answer: negative ion
7. copper is a good conductor, because the copper atom loosely holds
it's? Answer: valence
8. gold and silver are good conductor of electricity, because the
outer orbits have? Answer: one electron
9. when teo negatively charged rods are brought together, they? Answer:
repel each other
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10. one ampere is equal to? Answer: 1 coulomb flowing per second
11. what happens when two unlike materials are rubbed
together and then separated? Answer: one will be positive and the other negative
12. connecting two or more metallic objects with a wire or metal
strap is called?-
Answer: bonding
13. grounding minimizes the voltage difference between an object
and? Answer: ground
14. humidity has no effect in controlling a static charge on the
surface of? Answer: only liquids.
15. a static charge is generated by liquids when the liquids are?
Answer: moving and contact other materials
16. the charges on the surface of a liquid in a container can be
made harmless if the container is? Answer: purged
17. greater static charges are developed on smooth surfaced
materials than on rough surfaced materials because of the? Answer:
larger surface contact
18. what is applied to rubber or that leather belts to prevent the
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