21. When considering the Bohr model of a neon atom, which of the following is a true statement?
Ten protons would be located in the nucleus, and 10 neutrons would be on the outside of the atom orbiting in rings.
Ten protons would be located in the nucleus, and 10 electrons would be on the outside of the atom orbiting in rings.
O Ten protons would be located in the nucleus, and 20 neutrons would be on the outside of the atom orbiting in rings.
OTwenty protons would be located in the nucleus, and 10 electrons would be on the outside of the atom orbiting in rings.

The characteristics of the Bohr model allow you to find that the correct answer for the distribution of particles in the atom is:

   b) Ten protons would be located in the nucleus, and 10 electrons would be on the outside of the atom orbiting in rings.

The bohr model was initially developed for hydrogen, where it manages to fully explain the spectrum of the hydrogen atom, it was quickly spread to other multi-electronic atoms with the characteristic of having a single electron in their last orbit.

The extension to atoms with more than one electron in the last shell the model results are not completely correct.

The Bohr model uses Rutherford's knowledge that the atomic nucleus is a very small part of an atom that contains all its mass, that is, it contains the protons and neutrons and the electrons are in circular orbits around the nucleus.

In the case presented of Neon, its electronic configuration is

    1s² 2s² 2p⁶

Let's examine the different claims:

a) False. Protons and neutrons form the mass of the atom, therefore they are both in the nucleus.

b) True. The protons are in the nucleus and the electrons are in circular orbits.

c) False. All protons and neutrons must be in the nucleus, plus neon only has 10 neutrons.

c) False. The number of protons determines the type of atom. An atom with twenty protons is Calcium atom .

In conclusion, using the characteristics of the Bohr model we can find that the correct answer for the distribution of particles in the atom is:

  b) Ten protons would be located in the nucleus, and 10 electrons would be on the outside of the atom orbiting in rings.

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What are the factors affecting chemical reaction??? 4 points. ​

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According to the ideal gas law, which will occupy a larger volume - 100 g of helium or 100 g of oxygen, if both are at the same temperature and pressure.​

is a skateboard matter or no matter​

How much heat is needed to raise the temperature of 100g of an iron from 25°C to
110°C?
(The specific heat of iron is 0.45 J/g∙°C).

Where is a mid-ocean ridge exposed above sea level?

Question 11 options:

Himalaya Mountains


Mariana Trench


The Big Island of Hawaii


Iceland

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Inside the box is a list of endangered animals in the Philippines. Group the animals in three ways and make a diagram of your groupings in the space below.

2. DEFINE CHEMICAL BOND IN YOUR OWN WORDS.

what physical properties could be used to separate iron filings from table salt

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True or false

9.Circuit breaker is used to protect the user of appliance from an electrical shock.

10.Earthing or Grounding involves attaching to the ground a conductor in one line of the circuit to make that line electrically common with the earth. *​

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convert 1 bromopropane to bromoethane.​

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Potassium and bromine combine to make KBr. What is the name of this compound?

potassium bromine
potassium bromide
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Which subatomic particle has a positive charge?

Question 1 options:

all particles


neutron (n0)


proton (p+)


electron (e-)

Question 2 (2 points)
What information does the atomic mass of an element provide?

Question 2 options:

the difference between the number of protons and electrons (p - e)


the number of isotopes


the sum of electrons and protons in an atom (e + p)


the number of protons and neutrons in an atom (p + n)

Question 3 (2 points)
What is the atomic number of an atom?

Question 3 options:

the number protons and neutrons


the number of protons


the number of neutrons


the number of electrons and neutrons

Question 4 (2 points)
What is H2O (water) classified as?

Question 4 options:

a diatomic molecule


an atom


an element


a molecule

Question 5 (2 points)
Which property is a physical property?

Question 5 options:

easy to digest


becomes moldy quickly


does not burn


malleable (the quality of something that can be shaped into something else without breaking )

Question 6 (2 points)
What state of matter has a defined volume but undefined shape?

Question 6 options:

solids and liquids


liquids


liquids and gases


gases

Question 7 (2 points)
Which statement best describes the difference between a physical change and a chemical change?

Question 7 options:

A chemical change does not result in a new substance being formed, whereas a physical change does.


A chemical change results in a new element being formed, and a physical change results in a new compound being formed.


A physical change produces a new element, and a chemical change results in a bond breaking between atoms.


A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.

Question 8 (2 points)
Where are nonmetals located in the periodic table?



Question 8 options:

in the middle


along the bottom


along the upper left side


along the upper right side

Question 9 (2 points)
The elements fluorine (F), chlorine (Cl), and Iodine are all part of the same ____________________ on the periodic table.



Question 9 options:

period


group

Question 10 (2 points)
How are elements arranged on the periodic table?

Question 10 options:

atomic mass (# of protons and neutrons)


atomic number (# of protons)


density


boiling point




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2. Water should not be used to put electrical fires?

Use the following image to answer the following questions. A student was performing an experiment using two identical cups made of styrofoam. The student had Cup A holding water at 90℃ and Cup B holding water at 20℃. The student then put an Aluminum Bar into each cup that was touching the water. As time passed, the student noticed that the temperature of the water in Cup A and Cup B began to change. Question:
A. Predict what will happen to the temperature of the water in Cup A and Cup B after 1 hour has passed.
B. Explain and give evidence for what type of heat transfer is occurring between the 2 cups.

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Mg
Si
Cr
Са

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Ionic bonds form between which two types of elements?​

When baking soda and vinegar react bubbles are produced. What mostly occurred?

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