1 / 21

Physical Science

Physical Science. Semester Exam Review. True and False. Winds are examples of convection currents. The type of solution depends on the state of the solute. The particles of any liquid are constantly moving. In a forced-air heating system, the warm air circulates by convection

conway
Télécharger la présentation

Physical Science

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Physical Science Semester Exam Review

  2. True and False • Winds are examples of convection currents. • The type of solution depends on the state of the solute. • The particles of any liquid are constantly moving. • In a forced-air heating system, the warm air circulates by convection • When an object falls, it is reacting to the force of gravity.

  3. True and False • The concentration of a liquid solution can be expressed in terms of the percentage by volume of the solute. • Particles of liquids and gases move much more freely than do particles of solids • The terminal velocity is the highest velocity that will be reached by a falling object. • Objects in Earth's orbit appear to be weightless because they are in free fall. • Vitamin C has several oxygen-to-hydrogen bonds resembling those found in water, making Vitamin C polar.

  4. True and False • When water dissolves sugar, the positive ends of the water molecules are attracted to the negative ends of the sugar molecules. • Radiation is the transfer of energy in the form of waves. • Non-polar materials do not have separated positive and negative areas. • In hydrocarbons, carbon and hydrogen atoms share electrons in an unequal manner.

  5. True or False • Jane is on a merry-go-round that is moving at a constant speed. Her velocity is not constant • Conduction is the transfer of energy by the bulk movement of matter. • Salad oil does notdissolvereadily in vinegar. • Oil-based paints, nail polish, and iodine are examples of polar solutes • Acceleration is defined as the rate of change of velocity

  6. True or False • Increasing temperature always increases the solubility of a solid in a liquid solvent. • Friction is a force that discourages motion between two surfaces that are touching each other. • The momentum of a 5,000-kg truck that is standing still is zero. • The dissolving process for solid solutions occurs in a liquid state.

  7. True or False • Momentum is a property of an object and can be transferred from that object to another object. • Unbalanced forces acting on an object cause the object to accelerate. • A drink advertised as having 10% fruit juice has a concentration of 10% by volume of the fruit juice.

  8. Multiple Choice • Bases produce OH- ions in solution • An inclined plane is a slanted surface used to raise an object • Differences between static discharge and electric current • The oceans are a liquid solution • Centripetal force • How to speed up the solution process

  9. Multiple Choice • What chemical symbols represent • How does increasing the speed affect potential energy. • Inertia • 8 electrons make the outer level stable. • Gases dissolve faster in liquids when they are cold. • Resistance is measured in volts.

  10. Multiple Choice • Instantaneous speed=the speed on a spedometer. • Saturated solutions • Mass Number= number of protons • Adding solute to a solution increases its boiling point. • A wedge is an inclined plane with two sides.’ • Car engines transfer chemical energy to mechanical energy.

  11. Multiple Choice • Types of reactions • Sources of constant electric current. • Definition of isotopes. • Conductors and insulators • Definition of titration • Amplitude measures wave energy. • An electron moves around a nucleus • Acceleration due to gravity

  12. Multiple Choice • Properties of bases • Power = rate at which work is done. • Formulas of acids • According to the law of conservation of energy the energy in the universe remains constant. • Kilo- = 1000 • F=ma Newton’s 2nd law • Feathers fall slower due to air resistance. • pH of acids and bases.

  13. Multiple Choice • Lightning is a large discharge of static electricity • S is the SI unit for time • Watts are units of power • An alloy is a solid solution. • Joules are SI units for energy. • Definition of solubility • Chemical changes • Chemical Formulas

  14. Multiple Choice • Definition of mixture • Definition of motion • Hydronium ions • Acceleration = rate of change of velocity • Nonelectrolyte=solution that does not conduct electricity • Solution=homogeneous mixture. • Air resistance • Static electricity

  15. Multiple Choice • Electric powerLever=bar that moves around a fixed point. • Simple machine • Kinetic energy • Parallel circuit • Ohm’s law • Physical properties • Strong vs. weak bases • Convert from cm to m

  16. Multiple Choice • Increasing the surface increases the rate of solution. • Given a formula find the number of each type of atom. • Subscripts • Indicators • A compound is not a mixture. • The SI system is based on multiples of ten.

  17. Multiple Choice • Solvent vs. solute • Newton’s 1st law • Acids produce hydronium ions in solution • pH measures how acidic or basic a solution is • Name a compound • Series circuit • Periods on the periodic table • Columns on the periodic table • Volts and amps • Sources of electric current

  18. Multiple Choice

  19. Multiple Choice

  20. Multiple Choice

  21. Multiple Choice

More Related