Exam (elaborations)
Chem 120 JMU Wilson Test 1
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Chem 120 JMU Wilson Test 1
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Chem 120 JMU Wilson Test 1Fahrenheit - -1.8(C) + 32
-Celsius - -(F-32)/1.8
-Physical property - -properties can be observed without changing the
identity of the substance under observation
-Chemical property - -properties can only be observed during a change int
he identity of the substance under observation
-examples of chemical properties - -corrosive, combustible, mutagenic,
teratogenic, explosive
-examples of physical properties - -size, malleability, ductility, conductivity,
density, state of matter
-Homogenous mixture - -a mixture in which the composition is uniform
throughout
-Heterogenous mixture - -A mixture with uneven distribution of different
substances, solids, liquids, gases.
-Nuclear energy - -when nucleus of atoms breakdown
-Heat energy - -Only kinetic; speed molecules move
-Light/ radiant energy - -"microwaves"
-Chemical energy - -stored in chemical bonds
-Mechanical energy - -motion- "letting something roll"
-Electrical energy - -electrons moving through wires
-Kinetic energy - -energy produced form motion, energy that is being used
-Potential energy - -Energy that a motionless object has because of its
position or composition; available to be used
-Specific heat - -amount of energy reused to raise the temperature of 1
gram of a substance 1 degree celsius
-Specific heat formula - -q=mc∆T
, -Specific heat of water - -4.184 J/gC
-Carbohydrate and protein energy - -4 kcal/g
-Fat energy - -9 kcal/g
-Density formula - -D=m/v
-Low specific gravity - -indicates too much water in urine
- diabetes insipidus
-High specific gravity - -indicated large quantities of proteins in the urine
- inflamed kidney tubules
-Atoms - -Building blocks of matter; smallest unit of matter
-Cation - -A positively charged ion
-Anion - -A negatively charged ion
-Matter - -Anything that has mass and takes up space; exists in the electron
cloud
-Electrons - -Negatively charged particles; in the electron cloud; dictates
charge
-Proton - -positively charged particle; in nucleus; dictates atomic number
-Neutron - -no charge; in nucleus; dictates mass number
-Lewis Dot Structure - -diagram of a molecule using dots to represent
valence electrons
-Isotopes - -Atoms of the same element that have different numbers of
neutrons
-Al - -Aluminum
-Ar - -Argon
-As - -Arsenic
-Ba - -Barium
-B - -Boron
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