click below
click below
Normal Size Small Size show me how
Dr. Divis
Chemistry chapter 3
Question | Answer |
---|---|
What is a subatomic particel? | is a very small particle that is a building block for atoms |
What is an Electron? | is a subatomic particle that possesses a negative (-) electical charge |
what is a Proton? | is a subatomic particle that possesses a positive (+) electrical charge |
what is a Neutron? | is a subatomic particle that has no charge associated with it; taht is it is neutral |
How are the subatomic particles within an atom arranged | all protons and all neutrons present are found at the center of an atom in a very tiney volume called the nucleus, however Electrons are on the outer edge in the extranuclear |
what is the nucleus? | is the small sense positively charged center of an atom |
what is a nucleon? | it is any subatomic particle found in the nucleus of an atom |
the number of protons in an atom = what | Numer of electrons |
what is the atomic number? | is the number of protons in the nucleus of an atom, (atomic number = number of protons = number of electrons) |
what is the atomic number of B (Boron), and how many protons, and electrons are present | now lets remember atomic# = #of protons, also the atomic# is given at the top of each element of the periodic table so the atomic number, #protons, and #electrons for B, is 5 |