How can we help?

You can also find more resources in our Help Center.

15 terms

Changes in Matter

STUDY
PLAY
thermal energy
the total energy of all of the particles in an object
chemical change
a change in matter that produces one or more new substances
physical change
any change that alters the form or appearance of matter, but does not make any substance in the matter into a different substance
law of conservation of mass
matter is not created or destroyed in any chemical or physical change
energy
the ability to do work or cause change
temperature
a measure of the average energy of random motion of particles of matter
endothermic change
a change in which energy is taken in
exothermic change
a change in which energy is released
physical
a substance that undergoes a ______ change is still the same substance after the change
examples of physical changes
dissolving, bending, crushing, breaking, chopping
chemical
a ________ change produces new substances with properties different from those of the original substances
examples of chemical changes
combustion, electrolysis, oxidation, tarnishing
energy
every chemical or physical change in matter includes a change in ________
temperature
________ is related to the amount of thermal energy an object has
thermal energy
temperature is related to the amount of ________ an object has