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### 65 Cards in this Set

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 The two measurements necessary for calculating average speed are distance and time The chemical properties of matter comes mostly from its electrons Heat energy travels from an object with a high temperature to an object with a lower temperature. The source of all magnetism is moving electric charge When water at 4°C is heated it expands. When water at 4°C is cooled, it expands A solid is not considered fluid because of the fixed arrangement of its atoms or molecules It is correct to say that impulse is equal to the change in momentum Changing the magnetic field intensity in a closed loop of wires induces current and voltage. both of these When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is less than the resistance of either lamp. What exactly is a hydrogen bond? a strong dipole-dipole attraction involving a hydrogen atom What is the force of gravity on a 500-N woman standing on the Earth's surface? 500 N Object and image for a plane mirror lie equal distances from the mirror The lowest temperature possible in nature is -273°C The atoms of a polar covalent bond must be of different elements When you are in the way of a fast-moving object and can't get out of its way, you will suffer a smaller force of impact if you decrease its momentum over a long time One element is distinguished from another by the number of protons Colors seen when gasoline forms a thin film on water are a demonstration of interference Consider a sample of water at 0°C. If the temperature is slightly increased, the volume of water contracts Your feet feel warmer on a rug than on a tile floor because the rug is a better insulator than tile Most of the electromagnetic spectrum consists of visible light False Which of the following is not a transverse wave sound What elements tend to form ionic compounds elements found on opposite sides of the periodic table Electromagnetic waves can travel through a vacuum A substance that heats up relatively quickly has a low specific heat capacity What is the difference between an element and a chemical compound An element consists of only one type of atom Which radiation has no electric charge associated with it gamma rays Energy transfer by convection is primarily restricted to fluids Which pulls on the oceans of the Earth with the greater force the sun An Earth satellite is simply a projectile freely falling around the Earth True The source of all wave motion is a vibrating object A pH of 7 signifies a neutral solution Disregarding air resistance, objects fall at constant acceleration A Doppler effect occurs when a source of sound moves toward you An object that has potential energy may have this energy because of its location When a nucleus emits a beta particle, its atomic number changes, but its mass number remains constant The higher the temperature of an object, the shorter the wavelengths it radiates Steam burns are more damaging than burns caused by boiling water because steam has more energy per kilogram than boiling water, and gives up additional energy when it condenses.(both of these) When two lamps are connected in series to a battery, the electrical resistance that the battery senses is more than the resistance of either lamp A car accelerates from rest at 2 m/s/s. What is its speed 3 s after the car starts moving 6 m/s Pure water contains both H3O+ and HO- ions A device that transforms electrical energy to mechanical energy is a motor Water molecules are attracted to sodium chloride because the dipoles of water are attracted to the ionic charges The complementary color of blue is yellow A person is attracted toward the center of the Earth by a 500-N gravitational force. The force of attraction of the Earth toward the person is 500 N The space shuttle orbits at altitudes greater than 150 km so as to be above Earth's atmosphere The volume of matter comes mostly from its electrons Exert 1 N for a distance of 1 m in 1 s and you deliver a power of 1 W Which is most responsible for the ocean tides the moon It takes 40 J to push a large box 4 m across a floor. Assuming the push is in the same direction as the move, what is the magnitude of the force on the box 10 N Planets would crash into the sun if it weren't for their tangential velocities A skydiver steps from a helicopter and falls for 5 s before reaching her terminal velocity. During this 5-s interval, her acceleration decreases How many electrons are shared in a single covalent bond 2 Evaporation is a cooling process and condensation is a warming process How are ion-dipole attractions able to break apart the relatively strong ionic bond Many weaker ion-dipole attractions work together to pull apart the stronger ionic bond How is a physical change different from a chemical change The chemical identity of a substance is not altered during a physical change A molecule is group of covalently bonded atoms Polarization is a property of transverse waves When the distance between two charges is halved, the electrical force between the charges quadruples heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground at the same time as the lighter object What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s 0 A positive ion has more protons than electrons Your weight is the gravitational attraction between you and the Earth Complementary colors are two colors that produce white light when added together An object is placed exactly halfway between the Earth and the moon. The object will fall toward the Earth Atoms of a covalent bond are held together by the electrical attraction between shared electrons