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

Author Question: Classify the following changes as physical or chemical. Wood burns to ashes; water begins to boil; ... (Read 55 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 29, 2018
Classify the following changes as physical or chemical. Wood burns to ashes; water begins to boil; grass grows; a rock is crushed to powder.
 
  A) chemical; physical; chemical; chemical
  B) chemical; physical; physical; physical
  C) physical; physical; chemical; physical
  D) chemical; physical; chemical; physical

Question 2

Oxygen, Image, is certainly good for you. Does it follow that if small amounts of oxygen are good for you then large amounts of oxygen would be especially good for you?
 
  A) Yes. This is the reason patients are given pure (100) oxygen during medical procedures.
  B) Yes. Increased oxygenation of the bloodstream is good for you and can increase your life span.
  C) No. Breathing 100 oxygen for extended periods of time can be damaging to the body.
  D) No. Large amounts of oxygen will absorb hydrogen from the body and increase the amount of water in the body causing an imbalance in electrolytes.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


erika

  • Member
  • Posts: 522
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

xiazhe

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Irish Water Spaniel Irish Water Spaniel
The process of learning to read involves physical and socioemotional development, changes in the ... The process of learning to read involves physical and socioemotional development, changes in the ...
Global Water Stress Global Water Stress
Industrial Water Use Industrial Water Use
Ocean water is layered from top to bottom Ocean water is layered from top to bottom
Minerals and Water Minerals and Water
Video: Net filtration pressure and lymph formation, edema & blood velocity

For a complete list of videos, visit our video library