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

1/33

Click to flip

33 Cards in this Set

  • Front
  • Back
atoms
the smallest particle of an element
electron
a tiny negativly charged particle that moves around the nucleus of an atom
neutron
a small particle in the nucleus of an atom with no electrical charge`
proton
a small postively charged atom in the nucleus of a substance
mass
a measure of how much matter is in an object
matter
anything that has mass and occupies space
weight
a measure of the force of gravity on an object
gravity
the force that causes two masses to accelerate towards eachother
gravity is the force that...
causes all things near earth to accelerate towars the center of the earth
volume
the amount of space that matter fills
volume is measured in...
cm, milliters, and liters
Density Formula=
mass divided by volume
Density
relates the mass and volume of an object or material
density is measured in
g/cm3
element
pure substances that cannot be broken down into anyother substances by physical or chemical means
examples of elements:
sodium, gold, silver, oxygen, hydrogen
compound
a substance made of two or more elements that are chemically combined
mixture (and ex)
two or more substances in the same places but not chemically combined

ex: sea water
solution (and ex)
the best mixed of all possible mixtures

ex: sugar water
charachteristic properties
properties that hold true for a cartain substance
physical changes
alter the form of the substance but not its identity
chemical changes
substances combine or brak apart to form new substances.
thermal enegy
energy from the movement of its particles
temperature
a measure of the average energy of motion of the particles of a substance
solid
an object with a definite volume and a definite shape
crystalline solids
solids that are made up of crystals

ex: snow, sugar
anamophous solids
when particles are not arranged in a regular pattern
liquid
has no shape of its own and take son the shape of its container
gas
gas particles spread apart taking up the space available to them
fluid
a substance that flows
viscosity
the resistance of a liquid to flowing
melting

melting point of water?
the change in state from a solide to a liquid

0 degrees c
freezing
the change in state from a liquid to a solid