Lab: Half-Life

Question 1

Why are pennies good for simulating radioactive atoms? Check all that apply.

Revolt · Accepted Answer

A: Pennies have two sides—one to represent radioactive form and another to represent nonradioactive form.; B: You can easily see the two different forms.; C: You can create a large sample of pennies.; D: Pennies are not actually hazardous.; E: The chance of an atom decaying during a half-life cycle is 50%, the same as flipping a coin and getting tails.

Question 2

Did you read the Student Guide carefully?

Revolt · Accepted Answer

A: yes

Question 3

initial number of radioactive nuclei

Revolt · Accepted Answer

A: C

Question 4

What other objects could be used to simulate radioactive and nonradioactive nuclei? Check all that apply.

Revolt · Accepted Answer

B: quarters; C: a computer that shows pictures of atoms on screen; D: candy with letters on one side

Question 5

number of half-life cycles (time)

Revolt · Accepted Answer

B: V

Question 6

half-life of Lincolnium

Revolt · Accepted Answer

A: C

Question 7

number of protons in Lincolnium and Memorium

Revolt · Accepted Answer

A: C

Question 8

number (or fraction) of Lincolnium atoms

Revolt · Accepted Answer

B: V

Question 9

In this lab procedure, the variable is the number of half-life cycles (time) and

Revolt · Accepted Answer

A: independent

Question 10

the variable is the number (or fraction) of (radioactive) Lincolnium nuclei remaining at that time.

Revolt · Accepted Answer

B: dependent

Lab: Half-Life Answers

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