This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following is a radioactive semimetal? A) Ge B) Pm C) Po D) Rn E) none of the ... (Read 49 times)

kamilo84

  • Sr. Member
  • ****
  • Posts: 495
on: Aug 27, 2018
Which of the following is a radioactive semimetal?
 
  A) Ge
  B) Pm
  C) Po
  D) Rn
  E) none of the above

Question 2

What is the term for a modification of a substance that alters its chemical composition?
 
  A) atomic change
  B) chemical change
  C) molecular change
  D) physical change
  E) none of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

B)


kamilo84

  • Sr. Member
  • ****
  • Posts: 495
Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Aug 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Radioactive protection services record book and two badge-style dosimeters. Radioactive protection services record book and two badge-style dosimeters.
Atmospheric currents carried radioactive fallout across much of Northern Hemisphere Atmospheric currents carried radioactive fallout across much of Northern Hemisphere
Radioactive waste Radioactive waste
The Radioactive Decay Curve The Radioactive Decay Curve
The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is ... The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is ...
Radioactive Decay Radioactive Decay
Video: B cells and antibodies

For a complete list of videos, visit our video library