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
Reil [10]
3 years ago
11

Is dissolving salt a chemical change or physical change and why?

Chemistry
1 answer:
Firlakuza [10]3 years ago
4 0

It's a physical change because the composition of the salt hasn't change. Only the change in substance/form has occured. To tell if something has undergone physical change is:

• Melting

• Boiling

• Freezing

• Condensing

• Breaking

• Bending

• Dissolving

• Molecules can change motion and proximity

To tell if something changed chemically:

• Molecules rearrange with other molecules to make new substance

• Can be production of flames

• Color change

• Bubbling/fizzing

• Temp. change

• change in composition


You might be interested in
I have a chemistry question that I am needing help on please?​
aliina [53]
What country and grade are you?
Please tell me! I’m going to help you
8 0
3 years ago
Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block.
SSSSS [86.1K]

The kinetic energy formula is;

  • KE=\frac{m.v^2}{2}

The variable m represents the mass. Its unit is kilogram. We are informed that the mass of the object is 15kg. The variable v represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is 20m/s. Let's find the kinetic energy of the object by substituting these values in the formula.

  • KE=\frac{15kg.(20m/s)^2}{2}
  • 2.KE=15kg.400m^2/s^2
  • 2.KE=(6000)kgm^2/s^2
  • KE=(3000)kgm^2/s^2=3000J
5 0
1 year ago
A small file or organization use a payroll program for calculating staff wages each month each employee has a unique payroll num
Rama09 [41]

Answer:

the company is now aarav and its CEO of samruddhi and is the CEO in meeting with holika and will come in to help with holika as brainlyiest as the company's chief financial adviser to solve di problems

Explanation:

it was the most common thing that happened in my first pregnancy in my first year and I m and the other girl Bo.. were pretty good vibes for the last day of samruddhi but they are still very much a many years after I was knowing that

8 0
3 years ago
What are atoms made of
navik [9.2K]
Protons, nuetrons, and electrons

3 0
3 years ago
Please someone explain this too me​
Brums [2.3K]
I believe it would be 7.731. x 10^5? That is if they want you to evaluate.
3 0
3 years ago
Other questions:
  • BRAINLIESTTT ASAP!! PLEASE HELP ME :)
    13·1 answer
  • How does polarity of the solute and solvent affect the solubility of the solute ?
    11·1 answer
  • An element is a main constituent of paper, diamond and clothes etc. It forms covalent bonds with itself and other elements:- (1)
    7·2 answers
  • Which 0.1 M aqueous solution is the best conductor of electricity /12561947/e9552934?utm_source=registration
    7·1 answer
  • Life science explores _____.
    13·1 answer
  • The value of AH° for the reaction below is +128.1 kJ CH3OH (I)-CO (g) + 2H2 (g) How much heat is consumed when 87.1 g of hydroge
    10·1 answer
  • A test of an automobile engine’s exhaust revealed that 3.5 g of NO2 was emitted in 10. minutes of operation. How many moles of N
    12·1 answer
  •  ¿Qué pasa con aquellas enfermedades para las cuales aún no hay vacunas?
    13·1 answer
  • A container of oxygen gas is at STP. If this sample is put into an oven at 280 C, what would its pressure be, in atmospheres?
    15·2 answers
  • What is unique about an elements structure?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!