CHEMISTRY MIDDLE SCHOOL

Describe the structure of an atom. A)The nucleus is the dense center of the atom composed of protons and neutrons. Surrounding the nucleus is an electron cloud composed of electrons.

B)The nucleus is the dense center of the atom composed of electrons and neutrons. Surrounding the nucleus is an electron cloud composed of protons.

C)The electron cloud is the dense center of the atom composed of electrons. Surrounding the electron cloud is a nucleus composed of protons and neutrons.
Eliminate
D)The electron cloud is the dense center of the atom composed of protons and neutrons. Surrounding the electron cloud is a nucleus composed of electrons.

Answers

Answer 1
Answer:

A is the correct answer I took this tes a few weeks ago.
Answer 2
Answer:

Final answer:

An atom is structured into a central nucleus containing protons and neutrons, surrounded by an electron cloud that houses the electrons. This is similar to the solar system with the nucleus as the sun and the electrons as the planets revolving around it.

Explanation:

The structure of an atom is organized into two main parts: the nucleus and the electron cloud. The nucleus is the dense central part of the atom and is composed of protons and neutrons. Surrounding the nucleus, in various energy levels or orbits, is a space known as the electron cloud, which contains the electrons.

This structure can be related to the solar system where the nucleus represents the sun and the electrons depict the planets revolving around it. The correct statement that describes the structure of an atom, therefore is option A).

Learn more about Atom Structure here:

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Abrasion and carrying load containing sediment and deposition are examples of? land erosion
load effect
water erosion
none of the above

Answers

C : water erosion is the correct answer. I know this because water from the sea, pool, lake, et cetera could erode the ground surrounding the water because the pressure of the water and the water seeping into tiny cracks, and even holes in the ground cause sediment to mix with the water causing abrasion and erosion. Hoped I helped!

Answer:

the correct answer is water erosion (c.)

Why do elements in a group on the periodic table have similar chemical properties? A.
same number of outermost electrons

B.
same number of protons

C.
similar atomic masses

D.
similar atomic numbers

Answers

do elements in a group on the periodic table have similar chemical properties because their atoms have the same number of electrons 

A. same number of outermost electrons

How many milliliters of a 2.00 M KBr are needed to prepare 250.0 mL of 0.60 M KBr?

Answers

Answer:

75mL

Explanation:

Data obtained from the question include:

C1 = 2M

V1 =?

C2 = 0.60M

V2 = 250mL

The original volume of solution can be obtained as follows:

C1V1 = C2V2

2 x V1 = 0.6 x 250

Divide both side by 2

V1 = (0.6 x 250) / 2

V1 = 75mL

The volume needed is 75mL

Why is a pyramid used to describe the energy available at different layers in an ecosystem

Answers

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Answers

That would be "conductivity". All substances have some measurable amount it, but metals have by far the most.
What is the name given to the property of metal that allows electricity to pass through ?

Answer : conductivity

Are phosphorous and oxygen covalently or ionically bonded?

Answers

Answer:

covalently

Explanation:
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