Chemistry High School

Describe the two categories used to classify physical changes.

Answers

Answer 1

Answer:

Physical changes can be classified as reversible or irreversible. Melting is an example of a reversible physical change.

Explanation:

Related Questions

I NEED THE ANSWER ASAP! Its science btw

Which statement describes conditions in which a mineral can form?
A. Crystals of minerals dissolve in the groundwater in caves.

B. Materials dissolved in seawater crystallize on an ocean bottom.

C. Molten materials are cooled in a netalworks factory

D. Materials are mined from deposits deep underground.​

Answers

A. Crystals of minerals dissolve in the groundwater in caves

Answer:

b

Explanation:

22) Calculate the energy of a photon of radiation with a frequency of 9.50 x 1013 Hz.

Answers

The energy of the photon with a frequency of 9.50×10¹³ Hz is 6.29×10¯²⁰ J

From the question given above, the following data were obtained:

Frequency (f) = 9.50×10¹³ Hz

Planck's constant (h) = 6.626×10¯³⁴ Js

Energy (E) =?

The energy of the photon can be obtained as follow:

E = hf

E = 6.626×10¯³⁴ × 9.50×10¹³

E = 6.29×10¯²⁰ J

Therefore, the energy of the photon is 6.29×10¯²⁰ J

Learn more: https://brainly.com/question/7957705

Other Questions
How to do the 9 multiplication trick. A pumpkin is launched in the air and travels at a horizontal velocity of 25 meters per second for 5 seconds. How far does it travel horizontally? Describe the difference between fruit sugars and food sugars General partners must obtain approval from a majority of the limited partners in order to manage the business. True or False If two 4-Newton forces act on an object in the same direction, what is the net force on the object? Abcd is a parallelogram determine the length of BEA)51 unitsB)102 units C)96 unitsD) -11 units what can you do on veterans day to honor veterans? i have to right about a jupiter sweet pepper and i have no clue Which is NOT a water issue in the Middle East? Group of answer choiceswater shortagesan overabundance of waterwater pollutionunequal distribution of water True or false: Tonic contraction of smooth muscle in blood vessels is important in maintaining blood pressure. . Qu o chuyn ng ca mt vt l What case in Latin would the word sister's be in the folllowing sentence?The sister's jacket was on the floor. What type of government system does the U.S. have? Why is "A Raisin in the Sun" a fitting title for thestory of the Youngers? Can u help me withy my hw Kima is an athlete and weighs more than her sister, who is of the same height. What could be the reason?OA.Kima has more muscle mass than her sister because she is more athletic..As part of her athletic regimen, Kima takes several supplements that add to her weight.O c.To fuel her high level of activity, Kima consumes extra calories and carbohydrates. I NEED THE ANSWER ASAP! Its science btwWhich statement describes conditions in which a mineral can form? A. Crystals of minerals dissolve in the groundwater in caves. B. Materials dissolved in seawater crystallize on an ocean bottom. C. Molten materials are cooled in a netalworks factory D. Materials are mined from deposits deep underground. Why dove need to add movies in our slide? FRENCH HELP PLEASE ASAPPPPPPPP What symbols are these?