1823530
Descripción
Test por colette_louise, actualizado hace más de 1 año
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Creado por colette_louise
hace más de 9 años
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Pregunta 1
Pregunta
Kinetic theory describes how atoms move in solids, liquids and gases.
Respuesta
- True
- False
Pregunta 2
Pregunta
Kinetic theory describes how _______ move in solids, liquids and gases.
Respuesta
-
Atoms
-
Electrons
-
Particles
Pregunta 3
Pregunta
The energy an object or particle has because of its movement is called its kinetic energy.
Respuesta
- True
- False
Pregunta 4
Pregunta
Kinetic energy can explain the three states of matter.
Respuesta
- True
- False
Pregunta 5
Pregunta
This structure represents which state of matter?
Respuesta
-
Solid
-
Liquid
-
Gas
Pregunta 6
Pregunta
This structure represents which state of matter?
Respuesta
-
Solid
-
Liquid
-
Gas
Pregunta 7
Pregunta
This structure represents which state of matter?
Respuesta
-
Solid
-
Liquid
-
Gas
Pregunta 8
Pregunta
Which statement is correct?
Respuesta
-
The particles of a particular substance in each state are the same - only the arrangement and energy of the particles are different.
-
The atoms of a particular substance in each state are the same - only the arrangement and energy of the particles are different.
-
The particles of a particular substance in each state are different - only the arrangement and energy of the particles are the same.
-
The electrons of a particular substance in each state are not the same - only the placement and energy of the particles are similar.
Pregunta 9
Pregunta
Solids have strong forces of attraction that hold the particles close together in a fixed, regular arrangement. The particles don't have much energy so they can only vibrate about their fixed positions.
Respuesta
- True
- False
Pregunta 10
Pregunta
Solids have strong forces of _______ that hold the particles _______ __________ in a ______, regular arrangement. The particles don't have much _____ so they can only ______ about their fixed positions.
Respuesta
-
attraction close together fixed energy vibrate
-
separation far apart dangerous movement wiggle
-
attraction loosely together fixed energy vibrate
Pregunta 11
Pregunta
Liquids have weaker forces of attraction between the particles. The particles are close together, but can move past each other and form irregular arrangements. They have more energy than the particles in a solid - they move in random directions at low speeds.
Respuesta
- True
- False
Pregunta 12
Pregunta
Liquids have ______ forces of attraction between the particles. The particles are _____ _______, but can move past each other and form ________arrangements. They have _____ energy than the particles in a _____ - they move in ______ directions at ______ speeds.
Respuesta
-
weaker close together irregular more solid random low
-
similar far apart regular less gas uniform high
-
higher close together irregular less solid random low
Pregunta 13
Pregunta
There are almost no forces of attraction between the particles. The particles have more energy than those in liquids and solids - they are free to move and travel in random directions and at high speeds.
Respuesta
- True
- False
Pregunta 14
Pregunta
There are ______ ___ forces of attraction ______ the particles. The particles have _____ energy than those in liquids and solids - they are free to move and travel in _______ directions and at _____ speeds.
Respuesta
-
almost no between more random high
-
almost twenty on less uniform low
-
nearly 100 between more similar high
Pregunta 15
Pregunta
Conduction of heat occurs mainly in liquids.
Respuesta
- True
- False
Pregunta 16
Pregunta
Conduction of _____ energy is the process where _________ particles pass on their extra _____ energy to ___________ particles.
Respuesta
-
heat vibrating extra neighbouring
-
kinetic stiff heat tiny
-
heat little kinetic nearby
Pregunta 17
Pregunta
Conduction of heat energy is the process where vibrating particles pass on their extra kinetic energy to neighbouring particles.
Respuesta
- True
- False
Pregunta 18
Pregunta
The process continues throughout the solid and gradually some of the extra kinetic energy (or heat) is passed all the way through the solid, causing a rise in temperature at the other side of the solid. And hence an increase in the heat radiating from its surface.
Respuesta
- True
- False
Pregunta 19
Pregunta
The process continues throughout the ______ and gradually some of the extra _____ energy (or heat) is passed all the way through the solid, causing a _____ in temperature at the other side of the _____. And hence an ______ in the heat radiating from its ________.
Respuesta
-
solid kinetic rise solid increase surface
-
liquid heat decrease liquid impact bottom
-
solid kinetic influx liquid increase surface
Pregunta 20
Pregunta
Usually conduction is faster in denser solids, because the particles are closer together and so will collide more often and pass energy between them. Materials that have larger spaces between their particles conduct heat energy much more slowly - these materials are insulators.
Respuesta
- True
- False
Pregunta 21
Pregunta
Usually ________ is faster in ______ solids, because the particles are _______ ________and so will ______ more often and pass energy between them. Materials that have ______ spaces between their particles conduct _____ energy much more ______ - these materials are ________.
Respuesta
-
conduction denser closer together collide larger heat slowly insulators
-
convection denser further apart avoid larger heat quickly convectors
-
conduction denser closer together collide smaller kinetic slowly inducers
Pregunta 22
Pregunta
Why are metals good conductors?
Respuesta
-
They have free particles
-
They have expensive particles
-
They have free electrons
-
They have expensive electrons
Pregunta 23
Pregunta
Metals conduct so well because the electrons are free to move inside the metal.
Respuesta
- True
- False
Pregunta 24
Pregunta
At the hot end of the metal, electrons will move: faster or slower?
Respuesta
-
Faster
-
Slower
Pregunta 25
Pregunta
At the hot end of the metal, electrons will more faster and collide with other free electrons. What happens next?
Respuesta
-
They transfer energy
-
They transfer electricity
-
They exchange Christmas cards
Pregunta 26
Pregunta
Because the electrons can move freely, this is obviously a much faster way of transferring the energy through the metal than slowly passing it between jostling neighbouring atoms. This is why heat energy travels so fast through metals.
Respuesta
- True
- False
Pregunta 27
Pregunta
If a spade is left in the sun and you touch the metal part, it feels much hotter than the wooden handle. This is because the metal is hotter.
Respuesta
- True
- False
Pregunta 28
Pregunta
If a spade is left in the sun and you touch the metal part, it feels much hotter than the wooden handle.
IT ISN'T HOTTER - it just conducts the heat into your hand much quicker than the wood, so your hand heats up much quicker.
Respuesta
- True
- False
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