Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/8

Click to flip

8 Cards in this Set

  • Front
  • Back
electron
a subatomic particle that has a negative electric charge
nucleus
an atom's central region, which is made up of protons and neutrons
proton
a subatomic particle that has a positive charge and that is found in the nucleus of an atom;

the number of protons of the nucleus is the atomic number, which determines the identity of an element
neutron
a subatomic particle that has no charge and that is found in the nucleus of an atom
atomic number
the number of protons in the nucleus of an atom;

the atomic number is the same for all atoms of an element
mass number
the sum of the numbers of the protons and neutrons of the nucleus of an atom
isotope
an atom that has the same number of protons (atomic number) as other atoms of the same element but has a different number of neutrons (atomic mass)
subatomic particles
the smaller parts that make up atoms (electron, proton, and neutron)