Chemistry 151 Exam 1 (Chapters 1, 2, 3) ACTUAL UPDATED QUESTIONS AND CORRECT
ANSWERS
Chemistry is the study of matter and energy and how they interact with one another
Matter Anything that has mass and takes up space. There is Microscopic, Macroscopic,
and Particulate
, Solid Definite shape and volume
liquid A state of matter that has a definite volume but no definite shape.
Gas A state of matter with no definite shape or volume
Sublimation solid to gas
Deposition gas to solid
homogeneous mixture A mixture in which substances are evenly distributed throughout the mixture
heterogeneous mixture A mixture in which different materials can be distinguished easily
seven diatomic molecules hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine
chemical property A characteristic that results in a change in the chemical makeup of a sample
physical property A characteristic that can be determined without changing the chemical makeup of
a sample
Physical properties Color, odor, temperature, conductivity, melting/boiling point, solubility
Chemical properties Combustion, rusting, hardening(Cement), tarnishing
extensive properties depend on the amount of matter that is present (Mass is an extensive property)
Intensive property Does not depend on the amount of matter (Density is intensive)
Celcius to Kelvin K=C+273.15
ANSWERS
Chemistry is the study of matter and energy and how they interact with one another
Matter Anything that has mass and takes up space. There is Microscopic, Macroscopic,
and Particulate
, Solid Definite shape and volume
liquid A state of matter that has a definite volume but no definite shape.
Gas A state of matter with no definite shape or volume
Sublimation solid to gas
Deposition gas to solid
homogeneous mixture A mixture in which substances are evenly distributed throughout the mixture
heterogeneous mixture A mixture in which different materials can be distinguished easily
seven diatomic molecules hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine
chemical property A characteristic that results in a change in the chemical makeup of a sample
physical property A characteristic that can be determined without changing the chemical makeup of
a sample
Physical properties Color, odor, temperature, conductivity, melting/boiling point, solubility
Chemical properties Combustion, rusting, hardening(Cement), tarnishing
extensive properties depend on the amount of matter that is present (Mass is an extensive property)
Intensive property Does not depend on the amount of matter (Density is intensive)
Celcius to Kelvin K=C+273.15
