A _____ change occurs when a substance changes phase.
physical
chemical
nuclear

Answers

Answer 1

Answer:

A physical change occurs when a substance changes phase.

For example, boiling pure water (H₂O) is physical change of substance (from liquid to gaseous state). In physical change, the bonds between oxygen and hydrogen can not be separated.

Sublimation of iodine (from solid to gas state) is also physical change.

Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change.

Answer 2

Answer:

Final answer:

A physical change occurs when a substance changes phase. In this process, a substance may change from one state of matter to another but its foundational substance remains the same.

Explanation:

A physical change takes place when a substance alters its phase. This means that it shifts from one state of matter (solid, liquid, gas) to another. It's crucial to remember that although the physical characteristics of the substance may change, its substance does not. Let's take an example of water, it can exist as solid (ice), liquid (water), and gas (steam) but in all these states it remains H2O. Therefore, when a substance changes phase, it undergoes a physical change, not a chemical or a nuclear change.

Learn more about Phase Change here:

brainly.com/question/32745747

#SPJ6

Related Questions

Write a balanced net ionic equation for the following reaction. Explain how you arrived at this answer. What did you cancel out?AgNO^3 (aq) + KCI (aq) ----> AgCI (s) + KNO^3 (aq)
A lawnmower runs on gasoline.what type of energy transformation takes place in its engine?
Given the incomplete equation representing an organic addition reaction:X(g) + Cl2(g)==> XCl2(g)Which compound could be represented by X?(1) CH (3) C3H8(2) C2H4 (4) C4H10
What term describes matter that is a substance made of different kinds of atoms bonded together?
What experimental evidence did Thomson have for each statement? A. Electrons have a negative charge.B. Atoms of all elements contain electrons.

Which of the following is a balanced equation for cellular respiration? A.C6H12O6 + 6O2 6CO2 + 6H2O
B.CO2 + H2O C6H12O6 + O2
C.6CO2 + 6H2O C6H12O6 + 6O2
D.6C6H12O6 + 6O2 6CO2 + H2O
E.C6H12O6 + O2 CO2 + H2O
F.6CO2 + 6H2O C6H12O6 + 6O2

Answers

I did all of the work, and F is the answer I ended up with

6 At STP, which element is a good conductor of electricity?(1) chlorine (3) silver(2) iodine (4) sulfur

Answers

For an object to conduct electricity it should have free or delocalised electrons that are free to pass the charge and hence take part in conducting electricity.
From the given choices
Chlorine is a halogen existing as a diatomic gas. Iodine too is a halogen and 2 Iodine atoms held together by covalent bond. Cl - Cl bonds and I-I bonds are covalent bonds. the outer electrons of Cl and I take part in covalent bonds therefore they are fixed and not free to move about. therefore no free electrons to conduct electricity.
Sulfur is a solid that too is held together by covalent bonds so it does not have free electrons to conduct electricity.

Silver is a metal and a general property of metals are their ability to conduct electricity.
metal structure are metal ions tightly packed together. when the metal atoms are tightly packed their valence electrons are removed and delocalised. Positively charged metal ions are embedded in a sea of delocalised electrons.
therefore there are delocalised electrons that can conduct electricity

answer is 3) silver

It would be Silver because it is metal.

Where are the protons and neutrons and electrons located in an atom?

Answers

The protons and neutrons are located in the nucleus of an atom, while the electrons are located in the orbital cloud.

Final answer:

Protons and neutrons are found in the nucleus of an atom while electrons are found in orbitals surrounding the nucleus. The number of protons determines the type of element the atom is.

Explanation:

In an atom, protons and neutrons are located in the nucleus, which is the central part of the atom. The electrons on the other hand, are situated in the areas around the nucleus called electron shells or orbits. Protons carry a positive charge, neutrons are neutral, and electrons carry a negative charge. The number of protons in an atom is what determines the atomic number and thus, the type of element it is.

Learn more about Atom structure here:

brainly.com/question/7328982

#SPJ12

If enough heat was REMOVED from B, it would change into ____________.

Answers

If enough heat was REMOVED from B, it would change into A.

An exothermic reaction is a reaction that releases energy, this energy is usually in the form of heat. An endothermic reaction is a reaction that absorbs energy to take place.

To bring molecules together requires the release of energy, that is, an exothermic reaction.

Thus, if heat were removed from B, it would turn into A, with molecules closer together, in the solid state.

Learn more about exothermic reaction in: brainly.com/question/14969584

If enough heat was removed from B(liquid) it would become a solid i think.

Based on your findings, which theory about alien thickness seems most valid or most accurate?

Answers

Answer:

C.) Alien thickness is mainly affected by temperature. The greater thickness at lower temperatures may be used as a way to stay warmer in colder weather.

Explanation:

Environmental systems.

Well aliens are like mysteries on Sci-Fi. Aliens aren't humans or just beings that are different from us. When you're saying the thickness, I am assuming about the body of the alien is full of hard and rusty skin that is not like ours.
Hope this helped!!! >.< If not I am sorry....just didn't understand what you were getting to at. I am sorry.

What is the third most abundant gas in the atmosphere?a. Nitrogen
c. Argon
b. Helium
d. Oxygen