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
FrozenT [24]
3 years ago
12

melting, boiling, and bending are considered physical changes, but burning is a chemical change. explain why this is so.

Chemistry
1 answer:
Naya [18.7K]3 years ago
8 0
<span>So, when you make something boiling or melting, its still the same substance. Water doesn't change into something else, just change its state of matter. When you burn something, one substance reacts with another. For example, when you burn carbon in oxygen, you get carbon dioxide. That's the difference.</span>
You might be interested in
Which of the following lists describes characteristics of a base? (3 points) Bitter taste, high pH, and caustic Bitter taste, lo
garik1379 [7]

Bitter taste, high pH, and caustic Bitter are the characteristics of base.

<h3>What are the characteristics of base?</h3>

Bases have bitter taste, soapy feel, turn red litmus paper blue. Bases are substances that contain metal oxides or hydroxides. Its pH is higher than 7 up to 14.

So we can conclude that bitter taste, high pH, and caustic Bitter are the characteristics of base.

Learn more about base here: brainly.com/question/3948796

8 0
2 years ago
Read 2 more answers
What are chylomicrons? a. Alcohols with three-carbon chains b. Nitrogen compounds found in foods and made in the body c. Food ad
Artyom0805 [142]

Answer: Option C

Explanation:

Chylomicron is a small fat globule which is made of protein and lipids. These substances are found in the lymphatic fluid and blood where they tend to transport fat from the entry in the intestine to the liver and adipose tissue.

Once, one eats the fatty meal the blood is full of a number of chylomicrons which provides the blood texture.

The food that is digested is absorbed and transported to various parts of the body.

7 0
3 years ago
Pleasee help <br> will name brainliest
zmey [24]

Answer:

0.125. work- divide the volume value by 1000

873. work- multiply the length value by 100

98100. work- Conversion factor: 1 kg = 100000 cg

1) Centigram = Kilogram * 100000

2) Centigram = 0.981 * 100000

3) Centigram = 98100

285.65. work- 12.5°C + 273.15 = 285.65K

446.85. work- 720K − 273.15 = 446.85°C

346.25. work- 73.1°C + 273.15 = 346.25K

Explanation:

i hope this helps:)  brainliest plss??

8 0
3 years ago
Convert 1.580 hectoliters to deciliters.<br><br> liters
7nadin3 [17]

Answer:

1580 decilliters

Explanation:

5 0
2 years ago
Read 2 more answers
Using the systematic approach for equilibrium problems, calculate the pH of 0.05 M HOCl. Ka= 3.0*10-8 Group of answer choices 3.
SVEN [57.7K]

Answer:

The pH is equal to 4.41

Explanation:

Since HClO is a weak acid, its dissociation in aqueous medium is:

                HClO   ⇄   ClO-  +  H+

start:          0.05            0         0

change       -x               +x       +x

balance     0.05-x         x         x

As it is a weak acid it dissociates very little, in its ClO- and H + ions, so the change is negative, where x is a degree of dissociation.

the acidity constant when equilibrium is reached is equal to:

Ka=\frac{[ClO-]*[H+]}{[HClO]}=\frac{x*x}{0.05-x}=3x10^{-8}

The 0.05-x fraction can be approximated to 0.05, because the ionized fraction (x) is very small, therefore we have:

3x10^{-8}=\frac{x^{2} }{0.05}

clearing the x and calculating its value we have:

x=3.87x10^{-5}=[H+]=[ClO-]

the pH can be calculated by:

pH=-log[H+]=-log[3.87x10^{-5}]=4.41

7 0
3 years ago
Other questions:
  • For s2cl2 draw an appropriate lewis structure (clsscl). draw the molecule by placing atoms on the grid and connecting them with
    13·1 answer
  • Calculate the frequency of the n = 2 line in the Lyman series of hydrogen.
    15·1 answer
  • Under laboratory conditions of 25.0 degrees C and 99.5 kPa, what is the maximum number of liters of ammonia that could be produc
    11·1 answer
  • How interactions cause substance to boil at different tempurtures
    9·1 answer
  • Express 410,000 in scientific notation
    5·1 answer
  • Color of the CuCl2 hydrate before heating:
    5·1 answer
  • As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 yesrs of operating 104 nuclear power plants.
    15·2 answers
  • 1. How many moles of potassium are present in 4.23 x 1025 potassium atoms?
    14·1 answer
  • Which of the following statements about steroid hormones is true?
    15·1 answer
  • The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. the follow
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!