Question | Answer |
The smallest particles of elements that can be broken into and still retain the properties of the element is what? | Atoms |
What two types of particles are found within the nucleus of an atom? | Protons and neutrons. |
What charges are protons? | Positive |
What charge are neutrons? | Neutral. |
What is the heaviest part of an atom? | The nucleus |
Electrons that are in motion around the nucleus have a _______ charge. | Negative |
How many electrons are there for each proton that resides in the nucleus? | One |
The various orbits that the electrons occupy around the nucleus are known as _______. | Shells |
What are shells? | The various orbits that the electrons occupy around the nucleus. |
How many electrons can the first shell hold? | Up to two |
How many electrons can the second shell hold? | Eight |
How many electrons can the third shell hold? | Eighteen |
What is the valence shell? | The outer shell of an atom that plays a major roll in determining the electrical properties of an element. |
The outer shell of an atom is known as its ____________. | Valence shell. |
What determines whether an element is a conductor, a semiconductor, or an insulator? | The number of electrons that reside in the valence shell. |
What is a conductor? | A conductor is an element that freely conducts electricity. |
What is a semiconductor? | A semiconductor is neither a good conductor nor an insulator, but has some remarkable properties that make it very useful for making electronic components. |
What is an insulator? | An insulator an element that does not conduct electricity at all. |