Chem quiz ch 1

1st step explanation of results of experiment

you cant go into hypothesis and only use the data that supports your hypothesis

anything that has mass and takes up space

cannot be broken down any further into another substance; building block of all substances

smallest particle of an element that still has the same properties of the element

particle composed of 2 or more atoms H2

substance where atoms are in certain ratios to make the substance 2H + O

substance that can observed w/ a change in its composition

substance that can observed w/o a change in its composition

changing substance into another substance - gas -> CO2 + H2O

change in sample that does not change its composition (color)

measures the average kinetic energy of molecules- not a measurement of heat

how close you are to a known (correct) value

consistency

fixed composition; uniform throughout

no fixed composition

combination of 2 or more elements H2O

mixture uniform throughout - salt water

mixture that is not uniform- Italian salad dressing

amount of inertia a substance has