What is the difference between an element and a compound
An element has only one atom
What is the difference between a suspension and a solution
A suspension is heterogeneous and a solution is homogeneous
What branch of chemistry is the study of energy flow in chemical reactions
What branch of chemistry would be represented if someone were studying chemical reactions in your body
N2 is what type of element?
H2O is what type of pure substance
What branch of chemistry would be interested in predicting properties of new man made elements?
What type of research would be represented if one were studying how to make more compressible substances for car bumpers (basic, applied, technological)
What phase of matter is described as atoms stripped of their electrons?
What phase of matter has a definite volume but not shape?
What phase change in matter is the change from gas to plasma? (melting, freezing, vaporization, condensation, ionization, deionization, sublimation, deposition)
What Phase change is the change from solid to gas?
What phase change is from solid to liquid?
What can happen during a chemical reaction?
break or make bonds or both
How could one separate out the solid part of a suspension? (distillation, centrifugation, evaporation)?
Order of conversion factors
km hm dkm un dm cm mm
for any 1 compound, ratio of atoms is 1 proportion
law of definite proportions
a statement in chemistry: when two elements combine in more than one proportion to form two or more compounds the weights of one element that combine with a given weight of the other element are in the ratios of small whole numbers.
law of multiple proportions
had proposed that all matter is composed of small, indivisible