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 64 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
Thanks for the timely response, appreciate it

bigcheese9

  • Member
  • Posts: 333
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Yellow Wood Sorrel Yellow Wood Sorrel
Physical and Perceptual Dimensions of Sound Waves Physical and Perceptual Dimensions of Sound Waves
Mars with water Mars with water
The movement of water vapor molecules exerts vapor pressure on surfaces. The movement of water vapor molecules exerts vapor pressure on surfaces.
Most Americans obtain their drinking water from a community water system Most Americans obtain their drinking water from a community water system
Disitive Time For Water Disitive Time For Water
Video: How to find out if a population is evolving?

For a complete list of videos, visit our video library