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

1/11

Click to flip

11 Cards in this Set

  • Front
  • Back
element
a substance that cannot be broken down into other substances by chemical reaction
compound
a substance consisting of two or more different elements combines in a fixed ratio
essential element
a chemical element required for an organism to survive, grow, and reproduce
trace element
an element indispensable for life but required in extremely minute amounts
atom
the smallest unit of matter that retains the properties of that element
neutrons
a subatomic particle having no electrical charge (electrically neutral) with a mass of about 1.7x10^-24g. Found in the nucleus of an atom
protons
a subatomic particle with a single positive electrical charge, with a mass of about 1.7x10^-24g. found in the nucleus of an atom.
electrons
a subatomic particle with a single negative charge and a mass of about 1/2,000 that of a neutron or proton. One or more electrons move around the nucleus of an atom.
atomic nucleus
an atom's dense central core, containing protons and neutrons.
dalton
atomic mass unit
1.6605x10^-27g
atomic number
the number of protons in the nucleus of an atom unique for each element and designated by a subscript to the left of the elemental symbol