Test
Changing States Reading
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Preguntas del test (3)
1What Are Changes of State?
The water droplets of fog form from water vapor in the air. Fog disappears when the water droplets change back to [blank_start]water vapor[blank_end]. These changes are examples of [blank_start]changes[blank_end] of [blank_start]state[blank_end]. A change of state occurs whenever matter [blank_start]changes[blank_end] from one state to another. Common states of matter on Earth are [blank_start]solid[blank_end], [blank_start]liquid[blank_end], and [blank_start]gas[blank_end]. Matter may change back and forth between any two of these states.
Changes of state are [blank_start]physical[blank_end] changes in matter. They are reversible changes that do [blank_start]not[blank_end] change matter’s [blank_start]chemical[blank_end] makeup or [blank_start]chemical[blank_end] properties. For example, when fog changes to [blank_start]water[blank_end] vapor, it is still water and can change back to [blank_start]liquid[blank_end] water again.- Awater vapor
- Bchanges
- Cstate
- Dchanges
- Esolid
- Fliquid
- Ggas
- Hphysical
- Ichemical
- Jnot
- Kchemical
- Lwater
- Mliquid
2Processes that Cause Changes of State
Several processes are involved in common changes of state. They include [blank_start]melting[blank_end], [blank_start]freezing[blank_end], [blank_start]sublimation[blank_end], [blank_start]deposition[blank_end], [blank_start]condensation[blank_end], and [blank_start]evaporation[blank_end]. The Figure below shows how matter changes in each of these processes.
Phase transitions between solid, liquid, and gas
[Figure 1]
Q: Which two processes result in matter changing to the solid state?
A: The processes are [blank_start]deposition[blank_end], in which matter changes from a gas to a solid, and [blank_start]freezing[blank_end], in which matter changes from a liquid to a solid.
- Amelting
- Bfreezing
- Csublimation
- Ddeposition
- Econdensation
- Fevaporation
- Gdeposition
- Hfreezing
3The Role of Energy in Changes of State
Suppose that you leave some squares of chocolate candy in the hot sun. A couple of hours later, you notice that the chocolate has turned into a puddle like the one pictured in the Figure below.
Q: What happened to the chocolate?
A: The chocolate [blank_start]melted[blank_end]. It changed from a solid to a liquid.
In order for solid chocolate to melt and change to a liquid, the particles of chocolate must [blank_start]gain[blank_end] energy. The chocolate pictured in the Figure above gained energy from [blank_start]sunlight[blank_end]. [blank_start]Energy[blank_end] is the ability to cause changes in matter, and it is always involved in [blank_start]changes[blank_end] of state. When matter changes from one state to another, it either [blank_start]absorbs[blank_end] energy—as when chocolate melts—or l[blank_start]oses[blank_end] energy. For example, if you were to place the melted chocolate in a refrigerator, it would [blank_start]lose[blank_end] energy to the cold air inside the refrigerator. As a result, the liquid chocolate would change to a [blank_start]solid[blank_end] again.
Q: Why is energy always involved in changes of state?
A: The energy of particles of matter [blank_start]determines[blank_end] the matter's state. Particles of a [blank_start]gas[blank_end] have more energy than particles of a li[blank_start]quid[blank_end], and particles of a [blank_start]liquid[blank_end] have more energy than particles of a solid. Therefore, in order for matter to change from a solid to a liquid or from a liquid to a gas, particles of matter must [blank_start]absorb[blank_end] energy. In order for matter to change from a gas to a liquid or from a liquid to a solid, particles of matter must [blank_start]lose[blank_end] energy.
- Amelted
- Bgain
- Csunlight
- DEnergy
- Echanges
- Fabsorbs
- Goses
- Hlose
- Isolid
- Jdetermines
- Kgas
- Lquid
- Mliquid
- Nabsorb
- Olose
Información
- Descripción
- Test sobre Changing States Reading, creado por Wallace Mason el 14/01/2019.
- Autor
- Wallace Mason
- Idioma
- English
- Visitas
- 175
- Etiquetas
- Valoración
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