anything that has mass and occupies space
the amount of matter present in a sample
what are the physical states of matter
solid, liquid, and gas
a solid has what kind of shape and volume
definite shape and definite volume
a liquid has what kind of shape and volume?
indefinite shape and definite volume
properties that do not involve chemical reations, such as density, color, melting point, state of matter are all examples of what property of matter
the chemical reactions a substance undergoes is what property of matter
denisy and color are what property of matter
melting point, and state of matter are what property of matter
a change in matter in which it does not lose its identity
ice melting is what kind of change in matter
some substances being used up and others appearing in their place
rust, combustion, burning things, and digestion are examples of what?
matter that cannot be separated any futher into other kinds of matter by any physical means
elements are what
a physical combination of two or more pure substances in which each substance retains its own chemical identity
sand and salt put together into one thing is what?
a mixture containing visibly different parts each of which has different properties
granite rock, trail mix are examples of what
a mixture containing only one visibly distinct part, which has uniform properties throughout
gasoline, and sea water are examples of what
a pure substance that CANNOT be broken down into simpler pure substances by any PHYSICAL or CHEMICAL means
a pure substance that can be broken down into two or more simpler pure substances by CHEMICAL means
the smallest particle of an element that can exist and still retains the chemical behavior of that element
a tightly bound group of two or more atoms that act as a unit
a molecule that exists as a molecule containing two atoms of any element or elements its most common form
a molecule that exists as a molecule containing three atoms of the element in its most common form
a molecule in which all atoms present are the same element
a molecule in which two or more elements are present
all heteroatomic molecules are...
one hundreth of a meter
one thousanth of a meter
example of an exact number
example of an inexact number
a measurement would be inexact
with multiplication and division, how many sig figs do you use?
how many the one with the least amount has
with addition and subtraction how many sig figs do you use?
you go by the number with the least number of decimal places
mass over volume
9/5 times celcius+32
5/9 times fahrenheit-32
celcius + 273
celcius from kelvin=
what is known as absolute zero
all readings on the kelvin scale are
is the air you are breathing considered matter
specific gravity is...
density has the same numerical value as what?