Answer.
-Why is Democritus important with regard to atomic theory?
-Dalton’s atomic theory was the first:
-What subatomic particle did JJ Thomson discover?
-In 1913, Neils Bohr proposed a new atomic model known as the _________ model, which is patterned after the solar system.
- List the 4 principles of Bohr’s model:
a.
b.
c.
- In 1926, Erwin Erwin Schrödinger used mathematical equations to describe the likelihood of finding an ________ in a certain position. This atomic model is known as the _________________________ model of the atom.
-In 1932, James Chadwick discovered the ____________.
-Since 1932, the atomic theory has been further enhanced by the concepts that protons and neutrons are made of even smaller units called _________
-Everything in the universe (except energy) is made up of ______________________ .
-Therefore everything in the universe is made up of ___________________.
-An atom itself is made up of three tiny kinds of particles called subatomic particles: ___________,

________________ and __________________ .

The protons and the neutrons make up the ________________ called the nucleus.

The _____________________ fly around above the nucleus in a small cloud.

The electrons carry a ________________ charge and the protons carry a ___________________charge.

In a normal (neutral) atom the number of protons _____________________ the number of electrons.

Answer:

-Why is Democritus important with regard to atomic theory? Democritus developed his atomic philosophy as a middle ground between two opposing Greek theories about reality and the illusion of change. He argued that matter was subdivided into indivisible and immutable particles that created the appearance of change when they joined and separated from others.

-Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. 

-What subatomic particle did JJ Thomson discover? He discovered the electron in 1897.

-In 1913, Neils Bohr proposed a new atomic model known as the Bohr's model, which is patterned after the solar system.

- List the principles of Bohr's model:

a. An electron moves around the nucleus in a circular orbit.

b. An electron's angular momentum in the orbit is quantisized.

c. The change in an electron's energy as it makes a quantum jump from one orbit to another is always accompanied by the emission or absorption of a photon.

- In 1926, Erwin Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position. This model is known as the Rutherford Model of an atom.

-In 1932, James Chadwick discovered the neutron.

-Since 1932, the atomic theory has been further enhanced by the concepts that protons and neutrons are made of even smaller units called quarks. The quarks themselves are in turn made of vibrating strings of energy.

-Everything in the universe (except energy) is made up of matter.

-Therefore everything in the universe is made up of atoms.

-An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons and electrons.

The protons and the neutrons make up the centre called the nucleus.

The electrons fly around above the nucleus in a small cloud.

The electrons carry a negative charge and the protons carry a positive charge.

In a normal (neutral) atom the number of protons is the same number of electrons.

In ΔOPQ, \overline{OQ} OQ ​ is extended through point Q to point R, \text{m}\angle PQR = (4x-10)^{\circ}m∠PQR=(4x−10) ∘ , \text{m}\angle OPQ = (x+9)^{\circ}m∠OPQ=(x+9) ∘ , and \text{m}\angle QOP = (x-5)^{\circ}m∠QOP=(x−5) ∘ . Find \text{m}\angle PQR.m∠PQR.

I don't get this one either

i need answer asap pls

Which statements can be represented by this equation? Select three options.
4
29.2 - 14

Shilo is trying to compute the value of 27 + 55 + 13. She adds 27 + 13 to get 40, and then adds on 55.

Which of the following properties is Shilo using?

A.commutative
B.distributive
C.identity
D.associative

4,347 ÷ 21 i really need help

Multiply. Enter the product in the simplest form.

[tex]\frac {2}{5}{2}[/tex] x 5/7


The product is _____?


Please tell me how you got it very clearly


Any spam, nonsense, links, and anything that does not relate to this question will get deleted. Thank you.

Kiran poured 15 cups of water into equal-sized pitchers and filled 112 pitchers. How much water was in the full pitcher?

I NEED HELP PLEASE T-T

Help please :]!!
please be right,

Solve for the partial product in the algorithm.
Multiply 5 × 35 in the algorithm. Use the area model for help.

I only need help with the one that are highlighted, thanks. ( if you dont know the answer,
please don't bother.)

Evaluate.

7+22⋅6+23−6


31

33

68

I don't know.

Your beginning balance on your lunch account is $42. You buy lunch for $1.80 every day and sometimes buy a snack for $0.85. After 20 days, you have a balance of $0.05. How many snacks did you buy?

HELP

Cheng-Yu ordered a book that originally cost $24 from an online store. They are having a sale for 15% off all books, what is the cost of the book after the sale?

I need help like Asap and who ever anwer this question i give you a branilest so .Mateo is an artist .He sold three paintings for $523,$278 and $351 .Estimate the total that mateo earned from these paintings .

I need help on both of them pls help me...

4,715 ÷ 23 i really need help

A desk in a classroom has the following measurements: the table is 1.5meters x 80cm, its height is 90 cm. Calculate the volume of the desk in cubic inches.

Please is for today and also explain how!!

Use mental math to find the sum.

53 + 38

Referring to the figure, a building casts a
shawdow 18 feet long. A woman standing near the
building is 5 feet 8 inches tall and casts a
shadow 4 feet long. What is the height of the
building in feet and inches?

Julie ran 4 miles in 22 minutes. What is the unit rate in terms of minutes per 1 mile?

Mason purchased 5 pints of ice cream for a party. If each guest will be served exactly 3/4 pint of ice cream, what is the maximum number of guests Mason can serve?

please someone help me

Write an expression to represent the situation and answer the question. Shana took a test with 50 questions. She lost 2 points for each of the 5 quedtions she got wrong. She got 3 extra credit questions correct and recived 5 points for each. What is the total number of points she gained or lost overall

What is 100 x 2,000 - 3,000 + 10,000=?

Multiply. Enter the product in the simplest form.
3/8 × 2/5



The product is _____?


Please tell me how you got it very clearly


Any spam, nonsense, links, and anything that does not relate to this question will get deleted. Thank you.

3 liters of water are shared equally by 5 people how much water does each person get? division equation to represent the situation

what is the value of x?

pls help its 10 pm I couldn't do it bc I had it do an important thing pls help me it's for tomorrow I will give u brainliest and rate u but pls help (；′⌒`)