« previous next »

Author Question: What is the term for a modification of a substance that does not alter its chemical composition? ... (Read 79 times)

Ebrown

  • Hero Member
  • *****
  • Posts: 567
on: Aug 27, 2018
What is the term for a modification of a substance that does not alter its chemical composition?
 
  A) atomic change
  B) chemical change
  C) molecular change
  D) physical change
  E) none of the above

Question 2

Which of the following is an alkali metal?
 
  A) Al
  B) Cs
  C) Cu
  D) Mg
  E) none of the above


LVPMS

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Aug 27, 2018
Answer to Question 1

D)

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Chemical structures of hexoses Chemical structures of hexoses
The chemical structure of mescaline, derived from the peyote cactus The chemical structure of mescaline, derived from the peyote cactus
Substance Use Terminology Substance Use Terminology
Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ... Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ...
Regulation of membrane phospholipid composition in bacteria Regulation of membrane phospholipid composition in bacteria
Part of a Semantic Network in Long-Term Memory Part of a Semantic Network in Long-Term Memory
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library