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
satela [25.4K]
3 years ago
15

When placed in a freezer, liquid water turns into solid ice. Why is this considered a physical change?

Chemistry
2 answers:
RSB [31]3 years ago
4 0
This is considered a physical change because the water does not change its chemical properties - it is still water. It is simply just moving its shape such as gas form, liquid form, or solid form. 
Ad libitum [116K]3 years ago
4 0
Because you can physically see the object melting when it comes to the melting point. The objects texture, color, temperature, shape, and state of matter (solid, liquid, gas) are possibly changing. Especially the bolded changes are happening.

For example, in your question, your talking about ice. It changes its shape, state of matter, temperature, and texture.
You might be interested in
fills a 500.mL flask with 3.6atm of carbon monoxide gas and 1.2atm of water vapor. When the mixture has come to equilibrium she
enot [183]

Answer:

The answer to the question is

The pressure of carbon dioxide after equilibrium is reached the second time is 0.27 atm rounded to 2 significant digits

Explanation:

To solve the question, we note that the mole ratio of the constituent is proportional to their partial pressure

At the first trial the mixture contains

3.6 atm CO

1.2 atm H₂O (g)

Total pressure = 3.6+1.2= 4.8 atm

which gives

3.36 atm CO

0.96 atm H₂O (g)

0.24 atm H₂ (g)

That is

CO+H₂O→CO(g)+H₂ (g)

therefore the mixture contained

0.24 atm CO₂ and the total pressure =

3.36+0.96+0.24+0.24 = 4.8 atm

when an extra 1.8 atm of CO is added we get Increase in the mole fraction of CO we have one mole of CO produces one mole of H₂

At equilibrium we have 0.24*0.24/(3.36*0.96) = 0.017857

adding 1.8 atm CO gives 4.46 atm hence we have

 (0.24+x)(0.24+x)/(4.46-x)(0.96-x) = 0.017857

which gives x = 0.031 atm or x = -0.6183 atm

Dealing with only the positive values we have the pressure of carbon dioxide = 0.24+0.03 = 0.27 atm

7 0
3 years ago
What’s the answer to this question pls help
Solnce55 [7]
In order of reactivity: magnesium, iron, copper, silver
4 0
2 years ago
Which expression could represent the
Elis [28]
There are a couple of ways in which you can express the concentration of a solution, and here they are: gram per liter (g/L), molarity (M), parts per million (ppm.), and percents (%). 
As you can see, only M appears in your answers, which means that the correct option should be (2) 3.5 M.
6 0
3 years ago
Which statement correctly describes a chemical reaction?
Trava [24]
The correct answer is C
6 0
3 years ago
Determine the molar mass of the following elements. Include units in your answer.
son4ous [18]
Do the atomic mass times the number of atoms you have. That'll give you your answer. Hope it helps!
8 0
3 years ago
Other questions:
  • What is the smallest division on this balance?
    5·2 answers
  • This element is a gas at room temp, and we breathe it to survive. It has 8 protons
    11·2 answers
  • Which scientist was a great influence to others when he developed the heliocentric model about how the planets orbited the Sun?
    15·1 answer
  • How is a lithium atom (Li) different from a lithium ion (Li+)
    6·2 answers
  • Use bond energies to calculate ΔHrxn Δ H r x n for the reaction. 2H2(g)+O2(g)→2H2O(g) 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( g )
    11·1 answer
  • What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20. °C and standard pressure?
    8·1 answer
  • Choose the balanced chemical equation below that best represents the following reaction:
    11·1 answer
  • Please if anyone know this question, tell me its answer. I will be very thankful to you<br>​
    13·1 answer
  • Why does magnesium donate two electrons to oxygen in order to form magnesium oxide (MgO)?
    6·1 answer
  • When an object heats up, it __. When an object cools down, it __.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!