Flashcards in Physical Sciences Deck (54):
freely falling objects under Fg register no weight on a free falling scale
no transfer of heat
+ delta H
- delta H
Which way does increased pressure shift equilibrium?
towards the side of the reaction with less gas molecules
What does rate of reaction depend on?
What effects K?
Does K include pure solids or liquids?
What type of anhydrides do metals form?
What type of anhydrides do non-metals form?
What are Lewis acids and bases?
Acid= accept electron pair (BF3, AlCl3)
base= donate electron pair
What are Bronsted acids and bases?
acid= donate H+
base= accept H+
What occurs at flat regions of the titration curve?
[acid]= [conj. base]
exist between non-polar atoms and molecules
two types of solids
amorphous (ie. glass, polymers)
crystalline (repeated pattern of unit cell)
binding energy of electron
energy needed to detach one electron from an atom in its ground state
What happens to Theta when you go from high n to low n?
bends away from normal (Theta increases)
two tones played simultaneously at different frequencies
driving frequency = natural frequency
vibration at frequency of integer multiples
smallest interval between 2 notes on a major scale
point on standing wave where A= zero
How does an increase in difference of frequency affect the frequency of beats produced?
increased difference in frequency = increased frequency of beats produced
How does increased lambda change the distance between peaks?
increased lambda= increased distance between peaks
Are objects moving towards each other or away from each other if the perceived frequency is higher than the emitted wave?
source and detector are approaching each other
energy is transported, matter is not
electromagnetic wave, travels at speed of light (c), higher frequency than sound wave but similar wavelength
What is conserved in an elastic collision?
mass number= 0, atomic number= 1
He, mass number=4, atomic number=2
mass number= 0, atomic number= 0
proton decays into a neutron and a positron
emission of an electron
enzyme without a cofactor
enzyme with its' cofactor
What is sign of the EMF of a voltaic/galvanic cell?
What is sign of the EMF of a electrolytic cell?
Is anode of voltaic/galvanic cell positive or negative?
anode= negative, cathode= positive
Is anode of electrolytic cell positive or negative?
anode= positive (connects to + end of voltaic), cathode= negative (connects to - end of voltaic)
Which way do electrons flow in galvanic and electrolytic cells?
electrons flow from anode to cathode
anions flow to anode and cations flow to cathode
When is speed of sound fastest?
in a solid with high temperature because molecules are close together
Does a convex mirror diverge or converge light?
diverge (same as concave/ diverging lens)
Does a concave mirror diverge or converge light?
converge (same as convex lens)
Describe the focal length and radius of curvature of a convex mirror.
both are negative
How are colligative properties affected by presence of solutes?
increased concentration of solute= increase in boiling point and decrease in freezing point
the lowest frequency a standing wave can support, n=1, first harmonic
performs work independent of path (ie. gravity)
What direction does current flow in a circuit?
from positive to negative terminal
What type of image (real/imaginary, right side up/inverted) does a converging lens/ mirror create if object is outside focal length?
What type of waves can be polarized?
only transverse waves because their movement is perpendicular to propagation
mixture of weak acid and conjugate base
occurs when waves are 1/2 lambda (wavelength) apart
180 degrees or pi difference in phase
What particles in a particle accelerator are best at ionizing matter?
alpha > proton > electron > neutron
most massive and most charged particles