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Chapter 7: Determining States Of Substances
Test Description: Chapter 7 Quick Check 2 and Additional Questions
Instructions: Answer all questions to get your test result.
1) 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
Gas
B
Solid
C
Liquid
2) 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
Liquid
B
Gas
C
Solid
3) 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
Gas
B
Liquid
C
Solid
4) 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
Gas
B
Liquid
C
Solid
5) 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
Liquid
B
Solid
C
Gas
6) 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
Gas
C
Liquid
7) 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
Gas
B
Liquid
C
Solid
8) 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
decrease to -4 ºC
B
increase to 4 ºC
C
remain the same
9) 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 and boiling points are both below 25 ºC.
C
Their melting points are above 25 ºC, but boiling points are below 25 ºC.
D
Their melting points are below 25 ºC, but boiling points are above 25 ºC.
10) 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 B and C to condense.
B
Substance C to condense.
C
Substance A and B to condense.
D
Substance A to condense.
*select an answer for all questions
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