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zhenek [66]
3 years ago
15

Which process is an example of a chemical change?

Chemistry
2 answers:
love history [14]3 years ago
7 0

Answer: A metal railing rusting in damp weather.

Explanation:

A chemical change is one in which a new substance is formed during the process of this change and it's not reversible.

A metal railing rusting in damp weather is an example of a chemical change because a new substance called Rust (Fe2O3) you is formed when iron reacts chemically with air.

Yuliya22 [10]3 years ago
4 0
<span>Chemical Energy is energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction). Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy. 

</span>
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The electron configurations of two unknown elements X and Y are shown.
Svetllana [295]

 X: 1S²2S²2P⁶

Y: 1S²2S²2P⁶3S²3P⁶

The statement  which  is most likely   correct  about  the two elements  is

They  will  not react  because  both  have a complete outermost shell and are  stable.


 <u><em>Explanation</em></u>

  The  P orbital can   hold a maximum  of   6  electrons,therefore the 2P orbital for x  and  3P  orbital  for  Y   which are  outermost  subshell  are  fully filled .


This make   element Y and x  stable  since they  cannot  react either by gaining or losing electrons.

6 0
4 years ago
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The characteristics that best describe the tail of a phospholipid molecule are _____?
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<span>According to its definition, the answer is: The characteristics that best describe the tail of a phospholipid molecule are </span><span>a. neutral charge, nonpolar, and hydrophobic</span>
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3 years ago
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Question 9 (5 points)
frozen [14]

Answer:

A. air pressure,this is answer.

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3 years ago
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Which of the following is an element?
Kryger [21]

Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at room temperature.

8 0
3 years ago
an acid accepts H and removes them from a solution, is a solution where the water molecules are intact
n200080 [17]
<h3>An acid accepts H and removes them from a solution</h3>

When placed in water, acids, bases, and salts dissociate (separate) into electrolytes (ions). Salts dissociate into a cation (that is not H+) and an anion (that is not OH-), whereas acids and bases dissociate into H+ and an anion. An acid separates into anions and hydrogen ions (H+). Strong acids produce a high concentration of H+ by dissociating every single one of their molecules . Water-based solutions,

Acid:

When a material or chemical is in solution, it releases hydrogen ions (H+), which are known as acids. All hydrogen ions (H+) and chloride ions (Cl-), which are normally bound together by ionic bonding, dissociate (separate) in water when exposed to a strong acid like hydrochloric acid (HCl). Only some ions disintegrate into hydrogen ions (H+) and bicarbonate ions (HCO3-) in a weak acid like carbonic acid (H2CO3), while others are still bound together by ionic bonds.

Define base?

A base is a chemical that, when in solution, emits hydroxyl ions -{OH). We can also define a base as a substance that releases hydroxyl ions (OH-), which mix with any hydrogen ions (H+) in the solution to generate water molecules (OH- + H+ = H2O).

Therefore, a substance that receives or accepts hydrogen ions (H+) that are already present in the solution qualifies as a base.

Because it totally dissociates into sodium ions (Na+) and hydroxyl ions (OH-) when placed in water, sodium hydroxide (NaOH), which is a strong base, is now liberated and dissolves in water.

c

for more information please visite:

brainly.com/question/15017356?referrer=search

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8 0
2 years ago
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