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Chapter 2 Test
Science
| Question | Answer |
|---|---|
| What law has a flexible container | Charles's |
| What law has a rigid container | Ammonton's |
| Give an example of a low resistance object | water/alcohol |
| Give an example of a high resistance object | honey |
| particles of a liquid | are free to move throughout a container but remain in close contact with one another |
| The resistance of a liquid to flowing is its | viscosity |
| A solid is a state of matter that has a | definite volume and a definite shape |
| in which state of matter don the particles spread apart and fill all the space available to them | gas |
| The force of a gas's outward push divided by the area of the walls of the container is the gas's | pressure |
| According to Boyle's Law, when the pressure of a has increases, the volume | decreases |
| the greater the speed of gas particles, the | greater the pressure |
| When the temperature of a gas decreases, its | pressure decreases |
| according to Charles's Law when the temperature of a gas increases, its | volume increases |
| When an inflated balloon is exposed to cold air | the volume of the balloon decreases |
| A graph of Charles's Law shows the relationship between | temperature and volume of a gas |
| A graph that shows the pressure of a gas varies inversely with its volume under constant temperature demonstrates | Boyle's Law |
| A change that alters the form of a substance without changing it into another substance is called | a physical change |
| a chemical change results in | different substances with different properties |
| the energy a substance has from the movement of its particles is called | thermal energy |
| In chemical reactions the law of conservation of energy means that | the total amount of energy stays the same |
| what is vaporization? | a liquid becoming a gas |
| give 2 examples of vaporization | evaporation and boiling |
| what is condensation | a process involving a gas changing into a liquid |
| what always happens as a result of chemical reaction | new substances are produced |
| during chemical reaction energy is | either absorbed or relased |
| what will a graph of Charles's Law show | the volume of a gas directly proportional to its temperature under constant pressure |
| what will a graph of Boyle's Law show | relationship between volume and pressure of a gas |
| data plotted on a graph results in a line that slopes upward from left to right, tell you that | when one variable increases, the other variable increases |
| On a long trip, a truck's tires can get very hot and cause | their pressure to increase |
| the greater the speed of gas particles, the | greater the pressure |
| Boyle's Law- when the pressure of a gas increases | its volume decreases |
| the amount of space a gas takes up is its | volume |
| in which state of matter are particles packed tightly together and stay in fixed positions | solid |
| which state of matter can change volume easily | gas |
| the energy a substance has from the movement of its particles | thermal energy |
| A __ does not have definite shape but does have definite volume | liquid |
| Particles in a liquid, move around ___ as particles in a solid | more freely |
| when the temperature is constant, the volume of a gas will __ as the pressure decreases | increase |
| in a rigid container, as the temp. of a gas decreases, the pressure of the gas will __ | decrease |
| in a flexible container, when the temperature of a gas increases, the volume of the gas will ___ | increase |
| the type of graph that results when the volume of a gas is measure as its pressure is changed is a ___ | curved line |
| baking a cake is an example of a | chemical change |
| energy that comes from the chemical bonds within matter is called ___ | chemical energy |
| ___ is the change of state from a liquid to a solid, reverse of melting | freezing |
| in every chemical reaction, the total amount of energy ___ | stays the same |
| the common state of matter that does not have a definite shape or a definite volume is a | gas |
| what is viscoisty | the resistance of a liquid to flowing |
| to test Boyle's Law you could change the volume of a gas and increase its __ | pressure |
| when the temp. of a gas in a rigid container increases... | the pressure will increase |
| Charles's Law- when the temp. of a gas decreases, | the volume decreases |
| when a graph of two variable shows a straight line passing through (0,0), the two variables are | directly proportional to each other |
| what does a physical change do | alters the form of a substance, but does not change the material into another substance |
| when a substance cools, it loses ____ to its surroundings | thermal energy |
| the process in which a gas becomes a liquid | condensation |
| when a burning match gives off light, energy is being changed from one ___ into another | form |
| Crystalline Solid | solids that have particles arranged in a regular, repeating pattern |
| how are particles in a liquid? | particles are packed closely together, but they can move past each other freely |
| weather balloons are filled with only a small amount of helium because the ___ of the balloon will increase as the air pressure decreases at higher altitudes | volume |
| rigid container- when the speed of the gas molecules increases (raising temp.) the ___ of the gas also increases | pressure |
| when the temperature of a gas in a balloon increases, the volume of the balloon will __ | increase |
| the graph of Boyle's law shows that the volume of a gas at constant temp. is changed, the pressure ___ | varies inversely with the volume |
| when does a substance undergo a chemical change? | when it is changed into one or more new substances with different properties |
| the temperature of a substance increases when the ___ energy of the substance increases | thermal |
| what is sublimation | the change of a solid directly into a gas |
| in a chemical reaction that requires heating, some ___ is being changed from one form to another | energy |
| give 4 examples of sublimation | moth balls, dry ice, solid air freshers, ans iodine |
| Deposition | Gas straight to a solid |
Created by:
16asantiago