particle model

• what is the equation for density?

  density = mass / volume
• when does an object floatin a fluid?

  if the density of an object is lower than the density of a fluid.
• what is the force that keeps an object afloat?

  upthrust
• what is the law of displacement?

  an object completely submerged in a fluid (like water) will replace an amount of fluid equal to its own volume.
• if volume is fixed, increasing an object's mass will increase its what?

  density
• what is density a measure of?

  how concentrated an object's mass is.
• which state of matter has the lowest density?

  gases
• which state of matter has the highest density?

  solids
• what is used to measure the volume of liquids?

  measuring cylinder
• what is used to measure the volume of solids?

  Displacement can
• what is going from solid to gas called?

  sublimating
• what is going from gas to liquid called?

  condensing
• what does the kinetic theory of matter state?


  all matter is mde up of tiny particles that are constantly moving.
• why can't solids and liquids be compressed?

  because their particles are already very close together.
• why can gases be compressed?

  their particles are very far apart
• what happens to a substance' mass when it changes state?

  its mass is conserved.