Atomic Nucleus Flashcards
Which particles are found in the nucleus?
a
electrons
b
neutrons
c
alpha particles
d
protons
neutrons and protons
Which of the following subatomic particles orbits the nucleus?
electron
Which of the following are not located in the nucleus of an atom?
Electron
What keeps electrons from drifting away from the nucleus in an atom?
The electrons are attracted to the positive nucleus
The density of nuclear matter:
Does not change with the atomic numbers
The electrical charge of the nucleus is determined by:
the number of protons only
What keeps protons from repelling each other within the nucleus?
a strong nuclear force holds them together
Because electrons are orbiting the nucleus, the nucleus is stationary.
False
True or False:
Electrons are significantly smaller than protons and neutrons, we can ignore electrons when we consider the physical property of an atom.
False
The nucleus is incredibly dense–it contains nearly all of the mass of the atom within a tiny volume.
True
An atom containing an equal number of protons and electrons is electrically neutral.
True
