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
Andrews [41]
2 years ago
13

Which scenarios are examples of physical changes? Check all that apply.

Chemistry
2 answers:
lawyer [7]2 years ago
8 0

Explanation:

Physical change is a change that does not affect the chemical composition of a substance but it changes the physical appearance like size or shape of the substance.

For example, crushing a can, melting of ice, breaking a glass etc represents the physical change.

Scenarios which represent examples of physical changes are as follows.

  • Silicon is cut into tiny pieces for computer chips.
  • Lead is melted to form pellets.
  • Liquid water freezes to form ice.


Alona [7]2 years ago
3 0

Answer:

Lead is melted to form pellets

Explanation:

You might be interested in
How many oxygen atoms are present in 30g of glucose?
Alex17521 [72]
Jdjejsbdjwwoanwjediekemwmkssk
5 0
3 years ago
In your second paragraph, describe properties of sound waves. Then make a claim about how loud an explosion in space should be.
morpeh [17]

Answer:

Here are five important characteristics: wavelength, amplitude, frequency, time period, and velocity. The wavelength of a sound wave can tell the distance that wave travels before it repeats itself. The wavelength itself is a longitudinal wave that show compression and rarefactions of sound waves.

Explanation:

Hope this helped please pick me brainliest

8 0
2 years ago
For a half-reaction in an acidic solution, which substances should you add to balance the equation?
solmaris [256]
Hello!

I believe the correct answer to this question is H+ and H2O.

I hope you found this helpful! :)
8 0
3 years ago
Nitrogen monoxide, NO, reacts with hydrogen, H₂, according to the following equation.
Anvisha [2.4K]

Answer : The rate law for the overall reaction is, Rate=k[NO]^2[H_2]

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given the mechanism for the reaction :

Step 1 : 2NO+H_2\rightarrow N_2+H_2O_2    (slow)

Step 2 : H_2O_2+H_2\rightarrow 2H_2O     (fast)

Overall reaction : 2NO+2H_2\rightarrow N_2+2H_2O

The rate law expression for overall reaction should be in terms of NO\text{ and }H_2.

As we know that the slow step is the rate determining step. So,

The slow step reaction is,

2NO+H_2\rightarrow N_2+H_2O_2

The expression of rate law for this reaction will be,

Rate=k[NO]^2[H_2]

Hence, the rate law for the overall reaction is, Rate=k[NO]^2[H_2]

8 0
3 years ago
A charasteristic that helps a living thing survive
Fantom [35]
Ability to adapt to their environment?? there isn't much context to the question /:
3 0
3 years ago
Read 2 more answers
Other questions:
  • 11. What is the specific heat of a substance with a mass of 25.5 g that requires 412 J
    13·1 answer
  • 19 The coefficients in a balanced chemical equation represent(l ) the mass ratios of the substances in the reaction(2) the mole
    14·1 answer
  • Many different processes, both natural and human-caused, can release carbon dioxide into the atmosphere. Which of the following
    13·2 answers
  • What happens when hydrogen gas is passed over hot ferric oxide plzz help ​
    9·1 answer
  • Please help me!!!!
    13·1 answer
  • 180m/173 Tl -> 180/173 Tl + ? Express your answer as a nuclear equation ​
    14·1 answer
  • Can you always tell by looking at a substance if it is pure or not? ​
    10·1 answer
  • Please I need this help me​
    5·1 answer
  • what additional reaction product would result if naoh was used as a base in this reaction instead of k2co3?
    6·1 answer
  • PLEASE HELP IT DUE TODAY WILL GIVE 100 BRAINLY POINTS AND BRAINLYEST
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!