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 47 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?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

A PET scan, a medical use for radioactive isotopes. A PET scan, a medical use for radioactive isotopes.
Radioactive protection services record book and two badge-style dosimeters. Radioactive protection services record book and two badge-style dosimeters.
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
Types of Radioactive Decay Types of Radioactive Decay
The Radioactive Decay Curve The Radioactive Decay Curve
Radioactive Decay Radioactive Decay
Video: Structures that affect circulation - arterioles and vasomotor responses

For a complete list of videos, visit our video library