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
Shalnov [3]
3 years ago
13

Which statement is true of a chemical change?

Chemistry
1 answer:
Feliz [49]3 years ago
6 0

Answer:

A is the answer. Chemical changes happen when atomic bonds are broken or created during chemical reactions. Hence, in this case, it involve changes to molecular structure.

- Change in states are physical changes.

- When salts are dissolved in water, you can use Distillation to separate them. Distillation is a physical change as well.

- Dissolving is just physical change.

Explanation:

The statement that is true of a chemical change among the statements given in the question is "It involves changes in the molecular structure". The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has actually come to your help.

You might be interested in
Which of the following describes a property of water that helps sustain marine life forms?
Mariana [72]

Answer:

Open spaces in water's solid structure makes its solid state less dense than its liquid state.

Explanation:

  • Water unlike other liquids is special. It contracts when cooled, down to a temperature of 4°C but thereafter begins to expand as it reaches 0°C and turns into ice.
  • This property is useful for the preservation of marine life in very cold temperatures. During winter, the surface water in water lakes and rivers starts cooling. Upon reaching the temperature of 4°C, the surface water descends to the bottom as it denser.
  • This help in the maintenance of temperature of the water at the bottom at 4°C. It is in this layer that marine life is sustained.
4 0
3 years ago
The results of an investigation are the<br> (Blank)
jenyasd209 [6]

Answer: ending results

Explanation:

3 0
3 years ago
Calculate the number of moles in 7.41 X 1017 atoms Ag.
jolli1 [7]

Answer:

1.23x10^-6 mole

Explanation:

A clear understanding of Avogadro's hypothesis proved that 1mole of any substance contains 6.02x10^23 atoms. This indicates that 1mole of Ag contains 6.02x10^23 atoms.

Now, 1f 1mole of Ag contains 6.02x10^23 atoms, then Xmol of Ag will contain 7.41x10^17 atoms i.e

Xmol of Ag = 7.41x10^17/6.02x10^23 = 1.23x10^-6 mole

4 0
3 years ago
Design and implement a program (name it SumValue) that reads three integers (say X, Y, and Z) and prints out their values on sep
rjkz [21]

Answer:

class sum (

public static void sumofvalue (int m, int n, int p)

{

System.out.println(m);

System.out.println(n);

System.out.println(p);

int SumValue=m+n+p;

System.out.println("Average="+Sumvalue/3);

}

)

Public class XYZ

(

public static void main(String [] args)

{

sum ob=new sum();

int X=3;

int X=4;

int X=5;

ob.sumofvalue(X,Y,Z);

int X=7;

int X=8;

int X=10;

ob.sumofvalue(X,Y,Z);

}

)

Explanation:

The above program is made in Java, in which first we have printed value in a separate line. After that, the average value of those three values has been printed according to the question.

The processing of the program is given below in detail

* The first one class named 'sum' has been created which contains the function to print individual value and the average of those three values.

* In seconds main class named 'XYZ', the object of that the above class had been created which call the method of the above class to perform functions.

* In the main class values are assigned to variables X, Y, Z.

3 0
3 years ago
The intensity of a sound wave increases as the wave spreads out from the source of the sound
Alex

Answer:

The more spread out their energy becomes

5 0
3 years ago
Other questions:
  • which of the following occurs when an electron moves from a higher energy shell to a lower energy shell
    8·1 answer
  • Ill give u brainliest pls help
    9·2 answers
  • Hana fills a cup with sandy ocean water. She pours the mixture through a filter. What does she collect that passes through the f
    10·2 answers
  • Which type of space technology utilizes the electromagnetic spectrum to collect information?
    6·1 answer
  • The atomic mass of boron is 10.811. What is the mass number of the most
    8·1 answer
  • Increasing which factor will not increase the rate of a chemical reaction?
    12·2 answers
  • Which equation represents conservation of charge? 1 + 2e → 12 2 21° 12 +2e 3 Br2 → 2Br + 2e Br + 2e Br
    5·2 answers
  • Limiting reactants would appreciate the help
    8·1 answer
  • Identify the contents of the following mixtures. Select all that apply. Each circle is an atom. Different colors are used for di
    15·1 answer
  • Write the henderson-hasselbalch equation for a propanoic acid solution (ch3ch2co2h, pa=4. 874)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!