1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vitfil [10]
3 years ago
15

Which statement best describes the difference between a physical change and a chemical change

Biology
2 answers:
Arte-miy333 [17]3 years ago
8 0
In a physical change, the chemical bonds inside the material affected does not change. Same matter, just changed to look different. Like snapping wood in half.

A chemical change is when the chemicals are changed to re-arrange into different forms. An example of this is burning wood into ash. It cannot turn back into wood, it is only ash.
PIT_PIT [208]3 years ago
5 0
A physical change is when we teens get big you know what I mean???!!! and a chemical change is in our body, if you know what I mean. hope that helps.
You might be interested in
Name the animal with only bottom teeth. ​
user100 [1]

Giraffe is the animal with bottom teeth.

6 0
3 years ago
Which of the following is a cell found in connective tissue
emmainna [20.7K]
The typical cell types found in connective tissue: fibroblast Mast cells plasma cells macrophages, adipocytes leukocytes
8 0
3 years ago
1. More receptors result in<br> _sensitivity<br> increased, decreased
DiKsa [7]

Answer: increased

Explanation: the more you have the better you can tell where something is acting on you, ie touch

7 0
3 years ago
1. The following statement is similar to those you might see on exams. Write a paragraph of 3-5 sentences describing 1) whether
yanalaym [24]

Answer:

The oxygen dissociation curve represents the percentage saturation of Hb with oxygen at different partial pressure of oxygen. The different partial pressures gives sigmoid shapes to the curve. When this curves shifts to right, it  indicates  low affinity or binding of oxygen by the Hb. it also indicates the unloading or releases of Oxygen by Hb molecules at condition of low pressure. e,g in the muscles during strenuous exercise.However, when the curve shifts to the left, this indicate high affinity for oxygen, great binding, at high partial pressure of oxygen.e,g in the lungs to take oxygen and releases CO2.

Therefore in this scenario, the statement -. <u>During strenuous exercise, the oxygen-hemoglobin dissociation curve shifts to the right.</u> is correct. because oxygen is needed by the muscles therefore ,oxygen should be less binded by Hb,  decrease affinity and easily unloaded to muscles.

<u>The statement </u>This rightward shift reflects an increase in the affinity of hemoglobin for oxygen and favors loading of O2 into hemoglobin in the lungs is wrong.

As explained above the rightwards shift indicated low affinity of Hb for oxygen(unloading)and  favours unloading at the muscles because during strenuous exercise the partial pressure of oxygen is very low(but that of CO2 high) in the muscles which favours low oxygen molecules  binding by Hb, and easy release to respiring cells.

Explanation:

4 0
3 years ago
HELPPPPP!!!!!
horrorfan [7]

Answer:

  • <em>i think its B </em>

Explanation:

4 0
2 years ago
Other questions:
  • Do y'all teacher make y'all use that Rocketbook app? How do I use it?
    12·2 answers
  • The nitrogenous bases guanine and adenine are
    10·2 answers
  • Which would most likely be true in osteoporosis? osteoclast activity is high. osteoclast and osteoblast activity are normal. ost
    14·1 answer
  • Depending on the organism, the number of _____ in a cell may change.
    12·2 answers
  • How do limiting factors most affect population size?
    11·2 answers
  • You can adapt to a sunny environment bywearing sunglasses.jogging.listening to music.none of the above( i tried but im stuck i c
    9·2 answers
  • What are somethings that cause mutations in cancer
    5·2 answers
  • The biosphere is the only one of Earth’s systems that contains life.
    7·2 answers
  • The diagram shows Mendels test for flower color he crossed a plant with white flowers with one that had purple flowers then he l
    15·1 answer
  • How does reducing gene flow cause speciation?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!