science

• Magnitude and direction 


  What two entities comprise a vector?
• Velocity 


  What quantity is calculated from slope of the displacement versus time graph?
• Displacement


  What is the area under the velocity time graph?
• Zero


  What is the horizontal acceleration of projectiles?
• Vertical direction


  What direction controls time in falling body and projectile motion problems?
• Weight ... w=mg


  What force is always present, and what is its equation?
• It is towards the center and downwards a little. It is the sum of the normal force perpendicular to the bowl and the weight downwards.


  A ball rolls inside a salad bowl. The ball is released along the top edge and rolls down before climbing to the same height on the opposite side of the bowl. What is the direction of the acceleration of the ball when it at the top edge of the bowl?
• The acceleration is towards the center. It is supplied by the normal force and points towards the center.


  A ball rolls inside a salad bowl. The ball is released along the top edge and rolls down before climbing to the same height on the opposite side of the bowl. What is the direction of the acceleration of the ball when it at the bottom of the bowl?
• The centripetal force is the net force. It's magnitude is calculated from F=ma where "a" is the centripetal force.


  Mathematically what does centripetal force represent and how is centripetal force calculated?
• Zero. Because the displacement is perpendicular to the force (centripetal force.)


  How much work is the work done on an object moving in a circle? Why?
• Impulse is the change in momentum


  What is impulse?
• Absorbance


  Light that does not pass through a solution A = abc
• Activation


  Minimum energy needs to be added to a system in order for the chemical reaction to occur
• Alpha Particle


  He2+ 2 protons, mass number = 4, 2+ charge Highly ionizing particle; Low energy
• Anion


  Negatively charge ion
• Arrhenius Acid


  Donates a H+ ion
• Arrhenius Base


  Donates a OH- ion
• Atom


  Smallest constituent unit of ordinary matter that has the properties of a chemical element
• Atomic Mass


  Average of all naturally occurring isotopes
• Atomic Number


  Number of protons; defines the atom
• Beta Particle


  -1 proton, mass number =0; medium ionizing ability, medium energy
• Boiling 


  Phase change from a liquid to a gas
• Bronsted-Lowry Acid 


  Donates a proton, H+
• Bronsted-Lowry Base


  Accepts a proton, H+
• Calorimetry 


  Means of measuring the heat gained/ lost by a system during a chemical reaction
• Catalyst 


  Lowers the activation energy. Not a reactant. Not a product
• Cation


  Positively charged ion
• Chemical Equilibrium 


  Rate of the forward reaction equals the rate of the reverse reaction
• Condensation 


  Phase change from a gas to a liquid
• Conversion Factor


  Allows for the conversion from one unit of measure to another
• Covalent Bond


  Bond formed by the sharing of electrons between atoms.
• Deposition 


  Phase change from a gas to a solid
• Dipole-dipole


  Permanent IMF present in polar molecules
• Direct Relationship


  Relationship between two variables where when one changes, the other changes in the same manner
• Dissociate


  To break into ions
• Dissolve


  To break into smaller pieces
• Distillation 


  Process of separating liquids based on differences in boiling temperatures
• Double bond


  Two shared pairs of electrons
• Electrolyte 


  Dissociates into charge particles which are capable of conducting electricity
• Electrolytic Cell 


  Redox reaction that is spontaneous