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babymother [125]
3 years ago
13

What does it mean when there is a physical change?

Chemistry
1 answer:
stiks02 [169]3 years ago
3 0

Answer:

The matter has changed size, shape, or form.

Explanation:

A new substance that is formed is creation.

if the matter changed from one substance to another this is called a chemical reaction.

Surely not. It won't change the molecular level.

Hope that helps.

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A reaction occurs via the following sequence of elementary steps. What is the reaction intermediate?
Trava [24]

Answer:

C is the reaction intermediate.

Explanation:

A reaction intermediate is a molecular structure that is formed during the reaction but then is converted in the final products.

Usually, these reaction intermediates are unestable and, for that reason, the lifetime of these structures is low.

In the reaction, you can see in the first step C is produced, but also, in the second step reacts producing D. As is produced and, immediately consumed,

<h3>C is the reaction intermediate.</h3>
3 0
3 years ago
How many atoms are centered on the (100) plane for the fcc crystal structure?
Setler [38]

Here, we have to get the number of atoms present in the 100 plane of the FCC crystal lattice.

There will be 2 atoms in 100 plane of FCC crystal lattice.

In the face centered crystal (FCC) lattice there are atoms at each corner of the cube and each are shared by 4 another atoms. And an atom is present at the face of the crystal.

For the 100 plane of the Miller indices the intercepts are a, ∞, ∞ or 2a, ∞, ∞.

Thus, for the 4 atoms of the corner at the cube shared by 4 other atoms will contribute, 4 × \frac{1}{4} = 1 and the un-shared atoms at the face will contribute another 1, which make the total atom 1 + 1 = 2.

5 0
3 years ago
10. Complete the table with the correct number of electrons for each energy level.
zepelin [54]

Answer:

4. is the correct answer

Explanation:

PLEASE MARK BRAINLIST!!!

4 0
3 years ago
12.5 kilometers is equivalent to how many meters
storchak [24]
Hey! Thanks for submitting your question to brainly!

The answer is 12,500 meters

To find the conversion from km to meters, you do x1,000
6 0
3 years ago
Read 2 more answers
The reason it takes so much heat to melt ice or evaporate water is that extra energy is required to break _______ bonds between
mart [117]

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

<h3>Hydrogen bond</h3>

Hydrogen bonding is an electrostatic force of attraction between a hydrogen atom found between a pair of other atoms having a high affinity for electrons.

Hydrogen bonds cause water to be exceptionally attracted to each other creating cohesion.

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

Find out more on Hydrogen bond at: brainly.com/question/12798212

4 0
2 years ago
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