Chemistry Middle School

When a substance melts it is said to go through all of the following except:

A. phase change
B. physical change
C. chemical change
D. temperature change

Answers

Answer 1
The answer is C, chemical change
Answer 2

Melting is not a chemical change. It is a physical change involving the transition from solid to liquid without altering the chemical composition of the substance. The correct option is C.

Melting is indeed a phase change, as the substance transitions from a solid phase to a liquid phase.

Melting is a physical change because the substance's molecular arrangement changes from the ordered structure of a solid to the less ordered structure of a liquid, but the chemical composition remains the same.

Melting is not a chemical change. In a chemical change, the substance undergoes a transformation at the molecular or atomic level, resulting in the formation of new substances with different chemical properties. Melting involves a change in physical state.

Melting involves a temperature change. The temperature remains constant during the melting process, as the heat energy is used to break the intermolecular forces holding the solid together rather than increasing the temperature of the substance.

Therefore, melting is a physical change involving the transition from solid to liquid without altering the chemical composition of the substance. The correct option is C.

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Related Questions

pls help me its science

Answers

Answer: solids were liquds the form changes but it is still the same thing

Explanation:

How is mass conserved during photosynthesis?
-The mass of the reactants (carbon dioxide and water) is the same as the mass of the products (oxygen and sugar).
-The mass of the reactants (carbon dioxide and water) is different from the mass of the products (oxygen and sugar).
-The mass of the reactants (carbon dioxide and oxygen) is the same as the mass of the products (water and sugar).
-The mass of the reactant (carbon dioxide) is different from the mass of the products (water, oxygen, and sugar).
HELP PLEASE

Answers

Answer:

-The mass of the reactants (carbon dioxide and oxygen) is the same as the mass of the products (water and sugar).

Explanation:

Certified Educator The law of conservation of mass states that in a chemical reaction, mass is neither created nor destroyed. That means, the total mass for the reactants needs to equal the total mass of the products. The reactants for photosynthesis are 6 carbon dioxide, 6 water and sunlight.

Answer:

Pizza is great

Explanation:

I think this because pizza toppings are also packed with a compound called glutamate, which can be found in the tomatoes, cheese, pepperoni and sausage. When glutamate hits our tongues, it tells our brains to get excited and to crave more of it. This compound actually causes our mouths to water in anticipation of the next bite.

Why are the muscles that move food through your digestive track called involuntary muscles?

Answers

Answer:

because you cannot control them voluntarily

Explanation:

sorry if wrong

True or False

Low, gray, layered clouds that cover the sky and bring steady rain are nimbostratus clouds.

Answers

Answer:

true

Explanation:

it indicates a steady rain therefore true

true because no other cloud has that kind of experience

how do atoms combine to form extended structure?

Answers

Answer:

lose or share electrons in such a way that the outer shells become chemically complete

Explanation:

Most interactions among atoms take place in the outermost shell of each atom. The number of each electron in this shell determines how an atom combines with other atoms to form compounds. When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete.

When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete.

based on the following chart,which statement
below is not true​

Answers

Answer:

D) The particles in lead are more spread out than those in corn oil.

Explanation:

The higher density an object has, the less spread out the particles in the object is. SInce lead's density is 11.35 and corn oil's density is 0.90, corn oil's particles would be more spread out.

D. The particles are more spread out than those in corn oil
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