Free Exam: physcics test d
Number of Questions in Test: 12
Number of Questions in Preview: 5
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The chart below shows the melting point, in degrees Celsius (°C), of Group 1A elements. At what temperature do molecules of sodium have enough kinetic energy to move from the solid to the liquid phase?
Melting Point in °C of
Group 1A Elements
Atomic Number Element Melting Point (°C)
3 Lithium (Li) 181
11 Sodium (Na) 98
19 Potassium (K) 63
37 Rubidium (Rb) 40
55 Cesium (Cs) 28
87 Francium (Fr) 27
Melting Point in °C of
Group 1A Elements
Atomic Number Element Melting Point (°C)
3 Lithium (Li) 181
11 Sodium (Na) 98
19 Potassium (K) 63
37 Rubidium (Rb) 40
55 Cesium (Cs) 28
87 Francium (Fr) 27
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 2
The chart below shows the boiling point, in degrees Celsius (°C), of Group 2A elements. At what temperature do molecules of strontium have enough kinetic energy for vaporization?
Melting Point in °C of
Group 2A Elements
Atomic Number Element Boiling Point (°C)
4 Beryllium (Be) 2468
12 Magnesium (Mg) 1105
20 Calcium (Ca) 1484
38 Strontium (Sr) 1382
56 Barium (Ba) 1845
88 Radium (Ra) 1630
Melting Point in °C of
Group 2A Elements
Atomic Number Element Boiling Point (°C)
4 Beryllium (Be) 2468
12 Magnesium (Mg) 1105
20 Calcium (Ca) 1484
38 Strontium (Sr) 1382
56 Barium (Ba) 1845
88 Radium (Ra) 1630
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 3
The graph below shows the cooling curve for an unknown substance being studied in the laboratory. Horizontal lines on the graph indicate phase changes, during which the temperature does not change. edline refrence///
Refer to the above graph. What is the maximum temperature, in degrees Celsius, at which this substance will exist as a solid?
Refer to the above graph. What is the maximum temperature, in degrees Celsius, at which this substance will exist as a solid?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 4
The graph below shows the cooling curve for an unknown substance being studied in the laboratory. Horizontal lines on the graph indicate phase changes, during which the temperature does not change. refer to edline///
Refer to the above graph. At what temperature, in degrees Celsius, is the molecular kinetic energy great enough for vaporization?
Refer to the above graph. At what temperature, in degrees Celsius, is the molecular kinetic energy great enough for vaporization?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
The graph below shows the cooling curve for an unknown substance being studied in the laboratory. Horizontal lines on the graph indicate phase changes, during which the temperature does not change. refer to edline///
Refer to the above graph. What is the minimum temperature, in degrees Celsius, at which this substance will exist as a gas?
Refer to the above graph. What is the minimum temperature, in degrees Celsius, at which this substance will exist as a gas?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |