Chemistry 130 Arizona college of nursing midterm Questions and Answers
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Course
Chemistry 130
Institution
Chemistry 130
Matter
~ Anything that has mass and occupies space.
Mass
~ A measurement of the amount of matter in an object.
Weight
~ A measurement of the gravitational force acting on an object.
Physical changes
~ Changes matter undergoes without changing composition.
Physical properties
~ Propert...
Chemistry 130 Arizona
college of nursing
midterm Questions and
Answers
Matter
✓~ Anything that has mass and occupies space.
Mass
✓~ A measurement of the amount of matter in an object.
Weight
✓~ A measurement of the gravitational force acting on an object.
Physical changes
✓~ Changes matter undergoes without changing composition.
Physical properties
,✓~ Properties of matter that can be observed or measured without trying to change the
composition of the matter being studied.
Chemical changes
✓~ Changes matter undergoes that involve changes in composition.
Chemical properties
✓~ Properties that matter demonstrates when attempts are made to change into new
substances.
Length
✓~ Meter
Volume
✓~ Liter
Mass
✓~ Grams
Scientific notation
, ✓~ A way of representing numbers consisting of a product between a nonexponential
number and raised to a whole-number exponent that may be positive or negative.
Significant figures
✓~ The numbers in a measurement that represent the certainty of the measurement, plus
one number representing an estimate.
Density
✓~ The number given when the mass of a sample of a substance is divided by the volume
of the same sample.
Molecular weight
✓~ The relative mass of a molecule expressed in atomic mass units and calculated by
adding together the atomic weights of the atoms in the molecule.
Protons
✓~ a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge
equal in magnitude to that of an electron, but of opposite sign.
Neutrons
✓~ a subatomic particle of about the same mass as a proton but without an electric
charge, present in all atomic nuclei except those of ordinary hydrogen.
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