All categories

3 years ago

Which of the following changes can alter the form of a substance but does not necessarily change it to an other substance?

Chemistry

1 answer:

Goshia [24]3 years ago

8 0

Answer:

The physical changes can alter the form of a substance but does not necessarily change it to an other substance

Explanation:

The physical properties of matter is one that does not depend on composition.It just change the form of matter into another form with changing into composition.

Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.

The three states of matter are: solid, liquid, and gas. The melting point and boiling point are related to changes of the state of matter. All matter may exist in any of three physical states of matter.

Example:

When water is boiled then it change into vapors. Now the form of water is change but its composition is same like water
When water freezes into ice, now phase are different i.e water is liquid while ice is solid but both have same composition.

You might be interested in

ATP is considered to be an energy carrier molecule. Where is the energy actually located in this molecule?

bixtya [17]

ATP is considered to be an energy carrier molecule. Energy is actually located in this molecule B in the bonds between phosphate groups.

3 0

3 years ago

Read 2 more answers

Chemical weathering change the ___ of rock

a_sh-v [17]

Answer:

Chemical weathering is the process by which rocks are broken down by chemical reaction.

Explanation:

Chemical weathering is the weakening and subsequent disintegration of rock by chemical reactions. These reactions include oxidation, hydrolysis, and carbonation. These processes either form or destroy minerals, thus altering the nature of the rock's mineral composition.

5 0

3 years ago

Element Q is a theoretical nonmetal with atomic number 59. Consider the isotope: Q-95. How many electrons are in an atom of Q-95

Vinil7 [7]

Explanation:

The number of electrons in an atom of Q-95 will be 60 electrons.

The atomic number of an atom is the number of protons in the atom of the isotope

This number is unique to every atom and their isotope

An isotope of an atom is the existence of an atom having the same atomic number but different mass numbers.

Since atomic number the same as number of protons, they are the positively charged particles in an atom.

To have a negative charge, the number of electrons must be more than that of protons.

Charge = number of protons - number electrons

charge = -1

-1 = 59 - number of electrons

Number of electrons = 60 electrons

learn more:

Number of subatomic particles brainly.com/question/2757829

#learnwithBrainly

4 0

3 years ago

Which of the following polyatomic ions has a 3- ionic charge?

ch4aika [34]

Answer: Option (a) is the correct answer.

Explanation:

Poly means many and polyatomic ions means an ion(s) with two or more different atoms.

Out of the given options, phosphate ion is the polyatomic ion which has an ionic charge of 3-.

The formula depicting a phosphate ion is $PO_{4}^{3-}$ .

Whereas Nitrate, Sulfate, Hydroxide , Bicarbonate does not carry or have a 3- ionic charge.

4 0

3 years ago

At the Henry's Law constant for carbon dioxide gas in water is . Calculate the mass in grams of gas that can be dissolved in of

Dvinal [7]

The question is incomplete, here is the complete question:

At 25°C Henry's Law constant for carbon dioxide gas in water is 0.031 M/atm . Calculate the mass in grams of gas that can be dissolved in 425. mL of water at 25°C and at a partial pressure of 2.92 atm. Round your answer to 2 significant digits.

<u>Answer:</u> The mass of carbon dioxide that can be dissolved is 1.7 grams

<u>Explanation:</u>

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{CO_2}=K_H\times p_{CO_2}$