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Free Exam: chemestry test e

Number of Questions in Test: 18
Number of Questions in Preview: 5
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Question 1

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

Type: Multiple choice
Points: 1
Randomize answers: No

Question 2

Which atoms combine to form the molecule CH3CH2CH2Br?

Type: Multiple choice
Points: 1
Randomize answers: No

Question 3

Refer to the Periodic Table of Elements shown above. Which element group is highly reactive, needing to gain just one electron to achieve atomic stability?

Type: Multiple choice
Points: 1
Randomize answers: No

Question 4

Refer to the Periodic Table of Elements shown above. Cadmium (Cd) is a metal, a shiny solid at room temperature and conductor of heat and electricity. Which of the elements listed below shares these properties?

Type: Multiple choice
Points: 1
Randomize answers: No

Question 5

Refer to the Periodic Table of Elements shown above. Silicon (Si) is a metalloid, with physical and chemical properties of both metals and nonmetals. Which of the elements listed below is also a metalloid?

Type: Multiple choice
Points: 1
Randomize answers: No

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