Protons Flashcards
What happens when an electron is removed from an atom?
a positive charge remains
What is the relationship between the masses of protons and electrons?
Protons are much more massive than electrons.
Which statement(s) are TRUE about protons.
they have a mass over 1800 times greater than the mass of an electron
they have a positive charge
Which statement best describes how protons were discovered?
A cathode ray tube revealed a ray of positive particles traveling in the opposite direction of negative electrons.
A neutral atom has 37 electrons. How many protons does the atom have?
exactly 37 protons
_____ are attracted to negatively charged particles and repelled from positively charged particles.
protons
An atom can have 2.5 protons, as long as it also has 2.5 electrons.
False
An atom can have 2.5 protons, as long as it also has 2.5 electrons.
False
At the time protons were discovered, it was apparent that they existed in a central nucleus.
False
Protons have much more mass than electrons do.
True
The number of protons and electrons in a neutral atom must be equal.
True