Key Words & Terms
a substance that can not be broken down into any other substannce
What is an element?
cutting paper
what is a physical change?
type of mixture where the pieces can easily be identified
what is a heterogeneous mixture?
determines if an object will sink or float
what is density ?
what is chemistry ?
anything that takes up space
What is anything that takes up matter?
combustion
what is a chemical change ?
one example is a salad
what is a heterogeneous mixture?
amount of matter in an object
what is mass?
h20
What is water?
force that bonds two elements together
what is a chemical bond?
rust
what is a chemical change?
this kind of mixture is not easily separated?
what is a homogeneous mixture?
scientist prefer this to weight
what is mass?
matter is never destroyed
What is the law of conservation of matter?
2 or more atoms held together by a chemical bond
What is a molecule ?
boiling water
what is a physical change ?
an example is soy sauce
what is a homogeneous mixture ?
changes based on your location
what is weight ?
no control
what is the best one direction song ever?
a group of 2 or more different elements combined by a set ratio
what is a compound ?
releases energy
what is an exothermic change?
an example is salsa
what is a heterogeneous mixture ?
SI unit for mass
what is kg?
formula for volume
what is l x w x h