what are the physical changes on water

Answers

Answer 1

1. Ice melting involves a change from a solid to a liquid and the substances maintain the properties of water because the molecules never change. 2. Water boiling is a physical change as water molecules vibrate faster, they enter the gas phase and become water vapor.

Answer 2

The physical changes is the water freezing and the water evaporating.

Related Questions

Which is equal to a temperature of 20°C?
20°F
68°F
36°F
32°F

Answers

The correct answer would be 68°F because (20°C × 9/5) + 32 = 68°F.

A temperature of 20 degree Celsius is equal to 68 degree Fahrenheit temperature. Therefore, option b is correct.

What are temperature units ?

Temperature is a physical unit which measures the overall heat of an object. The SI unit of temperature is Kelvin (K) and the commonly used unit is degree Celsius (°C).

Other unit of temperature is Fahrenheit (°F). These units can be interconverted between each other with the specific relation between them.

We know that zero degree Celsius is 32 Fahrenheit . Let T be the temperature in degree Celsius,

then, (T° × 9/5) + 32 = T in °F.

Given, temperature = 20 °C.

This temperature can be converted to °F as follows:

(20 °C × 9/5) + 32 = 68 °F.

Therefore, 20 °C is equal to a temperature of 68 °F.

Find more on Fahrenheit temperature:

https://brainly.com/question/14272282

#SPJ6

How many hydrogen atoms are there in the following compound: 4CHA (2 points)
Select one:
a 4
b. 8
c. 12
d. 16

Answers

Answer:

Explanation:

The number 4 that is infront of the CHA(4CHA) means to say that there are 4C 4H and 4A

Tip:the number infront of a equation is call the coefficient

What three colors can be combined to produce any color within the visible spectrum

Answers

Answer:

red, green, and blue.

Explanation:

The primary colors of light that combine to produce any color within the visible spectrum are red, green, and blue.

The three colors that can be combined to produce any color within the visible spectrum are green, red & blue. Fun fact; these are also the only colors that are shown on your screen are these three. All the tiny pixels are composed of three small dots of compounds called phosphors surrounded by a black mask.

a ball is projected with a certain angle with initial velocity u. it covers horizontal range R. With what initial velocity it must be projected keeping the angle of projection same so its horizontal range becomes 2.25R

Answers

Answer:

1.5 u

Explanation:

The range equation is:

R = u² sin(2θ) / g

When u = v, R = 2.25 R.

2.25 R = v² sin(2θ) / g

2.25 u² sin(2θ) / g = v² sin(2θ) / g

2.25 u² = v²

1.5 u = v

Which choice most accurately defines resistance and voltage of a circuit?

Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.

Voltage can be defined as the potential difference between two points in a circuit, while resistance is the amount of electrons moving through a point in a circuit every second.

Voltage can be defined as the potential difference between two points in a circuit, while resistance opposes the flow of electrons in a circuit.

Resistance can be defined as the potential difference between two points in a circuit, while voltage opposes the flow of electrons in a circuit.

Answers

Answer:

Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.

Explanation:

A boat floats south on the Amazon River at a speed of 6 m/s. The boat and
passengers have a combined mass of 540 kg.

a. What is the momentum of the boat? (Remember, momentum is a vector
quantity.)

b. The passengers paddle backward, reducing the speed to 4 m/s. What was the
impulse applied to the boat by the paddling?

Answers

Explanation:

Take south to be negative.

a. Momentum is mass times velocity.

p = mv

p = (540 kg) (-6 m/s)

p = -3240 kg m/s

p = 3240 kg m/s south

b. Impulse = change in momentum

J = Δp

Since the mass is constant:

J = mΔv

J = (540 kg) (-4 m/s − (-6 m/s))

J = 1080 kg m/s

J = 1080 kg m/s north

Other Questions

what happened to connie in the story Where Are You Going, Where Have You Been" by Joyce Carol Oates Solve |2x+3|=1 for x it might have more than one answer What the answer question How many even 3 digit positive integers can be written using the numbers 3,4,5,6,and 7? The spread of cancer cells from one site to others in the body is known as _____. n Fill in the blank. The _______ for a procedure consists of all possible simple events or all outcomes that cannot be broken down any further. The (1) for a procedure consists of all possible simple events or all outcomes that cannot be broken down any further. 1. The total area within any continuous probability distribution is equal to 1.00. A. TrueB. False2. For any continuous probability distribution, the probability, P(x), of any value of the random variable, X, can be computed.A. True B. False 3. For any discrete probability distribution, the probability, P(x), of any value of the random variable, X, can be computed.A. True B. False A landscaping company charges $50 per cubic yard of mulch plus a delivery charge of $24. Find alinear function which computes the total cost C(in dollars) to deliver a cubic yards of mulch.C(x) = find the slope for (-4,-2)(-3,-6) Read the sentence below. "He was a true statesman and wanted to do what was right for the citizens of his district."Based on the context of this sentence, which word gives it a positive connotation?A. wantedB. citizensC. statesmanD. district why were artists in the PRC advised to observe people and experience a variety of social classes? a. Artists needed to advertise themselves to get artistic commissions b. Artists were considered part o the intellectual class and thus in need of reeducation c. After the Civil War, it was necessary for artists to get new inspiration d. the CCP needed workers to help with all parts of the country Match each type of financing with its purpose.Seed capital?Funding for research anddevelopment of abusiness ideaAngel investment?Funding to get a newbusiness up and runningVenture capital?Investment to achievehigh returns quickly How would 7/2 be written as a complex number crea un acrostico con la palabra RECONCILIACION. el tema es religion Two trains run in the opposite direction with speeds of v1 = 15 m / s and v2 = 20 m / s. A passenger on the first train (the one on v1) notes that train 2 takes 6 s to pass on its side. What is the length of the second train? (The passenger is supposed to be immobile looking through the window) 2. He..... me home in his car. The cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge? please help Describe how the Ming and Qing dynasties' policies of isolation during the 15th century affected China over the long term. Include at least one positive and one negative impact of these policies on China. (4 points) Personal decisions are not related to career decisions.Please select the best answer from the choices providedo True oFalse Inflation is a general rise in the level of prices experienced by people in a nation.