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

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


Play button


Play button




Click to flip

24 Cards in this Set

  • Front
  • Back
What Is Matter?
Anything that has mass and takes up space.
Name 5 things that are not matter.
Light, heat, emotion, thoughts & ideas.
What does atom mean in greek?
"Cannot be divided"
Define Atom
A small particle that makes up most types of matter.
What does The Law of Conservation of Matter state?
Matter is neither created nor destroyed.
Define Electron
A negatively charged particle.
Who discovered the electron?
J.J Thompson
Define Nucleus
The positively charged central part of the atom.
Define Proton
A positively charged particle
Who discovered the proton?
Define Neutron
Uncharged particles in the nucleus of an atom.
Who discovered the neutron?
James Chadwick
Define Element
A material that cannot be broken down to simpler materials by ordinary means.
What does atomic number tell you?
The number of protons in the nucleus of each atom of that element.
What does the atomic mass tell you?
How heavy its atoms are compared with atoms of other elements.
Mass Number=.....
sum of protons and neutrons
Mass # - Protons
__________ generally have a shiny or metallic luster
_____________ are good conductors of heat and electricity.
_____________are elements that are usually dull and most are poor comductors.
____________ are elements that have the characteristics of metals and nonmetals.
Who published the first periodic table?
Dimitri Mendeleev
Define Substance
A sample of matter that has the same composition & properties throughout.
Define Compound
A pure substance whose smallest unit is made up of atoms of more than one element.