Chapter 7: Determining States Of Substances Question Preview (ID: 57088)


Chapter 7 Quick Check 2 And Additional Questions. TEACHERS: click here for quick copy question ID numbers.

Boiling point of substance A: 10 ºC; Boiling point of substance B: 20 ºC; Boiling point of substance C: -2 ºC .... Reducing the surrounding temperature to 0 ºC will cause ___________________________.
a) Substance A to condense.
b) Substance C to condense.
c) Substance A and B to condense.
d) Substance B and C to condense.

Substances A, B and C exist as gases at room temperature (25 ºC). Which statement best describes the melting and boiling points of A, B and C?
a) Their melting and boiling points are both above 25 ºC.
b) Their melting points are below 25 ºC, but boiling points are above 25 ºC.
c) Their melting points are above 25 ºC, but boiling points are below 25 ºC.
d) Their melting and boiling points are both below 25 ºC.

On another winter day in Rayon City, the government sprinkled salt over the snow. The surrounding temperature was -3 ºC, and the snow melted soon after the salt was sprinkled.The salt caused the melting point of snow to ____________________.
a) increase to 4 ºC
b) decrease to -4 ºC
c) remain the same
d)

If the melting point of a substance is -218 ºC and the boiling point of the substance is -183 ºC, what is the state of the substance at -115 ºC?
a) Solid
b) Liquid
c) Gas
d)

If the melting point of a substance is -218 ºC and the boiling point of the substance is -183 ºC, what is the state of the substance at -233 ºC?
a) Solid
b) Liquid
c) Gas
d)

If the melting point of a substance is -218 ºC and the boiling point of the substance is -183 ºC, what is the state of the substance at 10 ºC?
a) Solid
b) Liquid
c) Gas
d)

Snow, which is essentially solid water, melts at 0 ºC. In winter, Rayon City's temperature was -4 ºC. Snow will be present in ___________ state on this day.
a) Solid
b) Liquid
c) Gas
d)

If the melting point of a substance is 38 ºC and the boiling point of the substance is 120 ºC, what is the state of the substance at 150 ºC?
a) Solid
b) Liquid
c) Gas
d)

If the melting point of a substance is 38 ºC and the boiling point of the substance is 120 ºC, what is the state of the substance at 5 ºC?
a) Solid
b) Liquid
c) Gas
d)

If the melting point of a substance is 38 ºC and the boiling point of the substance is 120 ºC, what is the state of the substance at 55 ºC?
a) Solid
b) Liquid
c) Gas
d)

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