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
castortr0y [4]
3 years ago
13

When a substance experiences a phase change (state of matter change) is this a chemical or physical change? How do you know?

Physics
1 answer:
makkiz [27]3 years ago
4 0

Answer:its a physical change as state of matter changes without any reactions

Explanation:when a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical "reactions," no reaction is actually occurring

You might be interested in
A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass,
fomenos

Answer:

The momentum would be doubled

Explanation:

The magnitude of the momentum of the freight train is given by:

p=mv

where

m is the mass of the train

v is its speed

In this problem, we have that the speed of the train is unchanged, while the mass of the train is doubled:

m'=2m

therefore, the new momentum is

p'=m'v=(2m)v=2(mv)=2p

so, the momentum has also doubled.

7 0
3 years ago
Question 12 (1 point) Question 12 Unsaved
Bezzdna [24]

Slope is your answer

7 0
3 years ago
How large is the area of water found on Mars?
ehidna [41]

More than five million cubic kilometers of ice have been identified.


8 0
3 years ago
Read 2 more answers
A tire has a pressure of 325 kPa at 10°C.
musickatia [10]
5 times that of initial pressure i.e 1625 kpa
6 0
3 years ago
Read 2 more answers
How early do you think i should start saving and searching for scholarships and state aid
brilliants [131]
Never too early to start searching. Do some research about student savings versus parent savings though. If a student has savings, they will make you use it to pay for college, while the same amount of savings in the parents name may be exempt. Check it out.
8 0
3 years ago
Other questions:
  • Two cars are driving at the same constant speed on a straight road, with car 1 in front of car 2. car 1 suddenly starts to brake
    12·1 answer
  • A certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 35.5 m/s. a) What is the coeff
    15·1 answer
  • Hospitals are interested in ocean research because:
    7·1 answer
  • What is the difference between speed and velocity? Speed is rate of motion of an object and velocity is what direction Speed is
    11·1 answer
  • For the magnetic field at some random angle to the plane of the small coil, draw a picture showing only the small coil, a vector
    10·1 answer
  • A bicyclist of mass 60kg supplies 340W of power while riding into a 5 m/s head wind. The frontal area of the cyclist and bicycle
    13·1 answer
  • How does`ezzzzz321erfq23c2f
    15·1 answer
  • List two pieces of evidence<br> related to this picture
    7·2 answers
  • is the following statement true or false? the light wave from a bulb is an example of a periodic wave.
    14·1 answer
  • 25. How long does it take a child on a swing to complete one swing if her center of gravity is 4.00 m below the pivot?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!