An atom of any element must contain(1) an equal number of protons and neutrons
(2) an equal number of protons and electrons
(3) more electrons than neutrons
(4) more electrons than protons
Answers
If the number of protons and electrons are not equal, it becomes an ion.The number of protons and neutrons can vary widely depending on what the substance is and depending on the isotopes.
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Check all correct statements concerning pentyne.
A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one of her materials?
Why CH4 has a lower boiling point than CF4
What are the phase change processes taking place when a substance is in equilibrium between liquid and gas phases? A. Melting and boiling B. Expanding and contracting C. Evaporating and condensing D. Freezing and thawing
Answers
Answer:
A) 2Na + = 2NaBr
Explanation:
As the problem says that you should find the balanced chemical equation for the synthesis of NaBr from Na and , the reactants are Na and
and the product is NaBr, so it can be writen as:
Na + = NaBr
Then you shoud balance the equation, it means that you should have the same number of each element in each part of the equation, so if you put a number 2 for the NaBr and the Na, the equation will be balanced:
2Na + = 2NaBr
B. Connected by bonds to form compounds.
OC. The basic building blocks of matter.
O D. Heterogeneous and refer to color, texture, and appearance.
Reset Selection
Answers
Atoms are the basic building blocks of matter. The correct option is C.
What are atoms?
Atoms are the basic unit and building block of matter. They are the smallest unit, but they can be divided. They do not emit charge on dividing into the further, the smallest parts.
Atoms are further divided into electrons, protons, and neutrons. They are the charged particles that revolve in the shell of the atom. A nucleus is also present in the between of the atom.
Atoms are considered the building blocks of matter, as all matter is made up of many atoms. The configuration of the atom defines the state of matter.
Thus, the correct option is C. The basic building blocks of matter.
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Answer:c
Explanation: atoms make matter
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They are the smallest particles of any material.
B.
They are the building blocks of matter.
C.
They are the most expensive materials on earth.
D.
They break down easily.
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elements are the make up of matter
it is not the smallest particle of a material,also not all elements are expensive
some can be found easily and also elements are simple without combination of other substances so it might be able to be splitted
I think the best answer among the choices listed above is option A. Elements are the smallest particles of any material. It cannot be broken down into more tiny particles. There are 118 known elements where 94 occurs naturally and the 24 remaining are synthetic.
Answers
The number of valence electrons that a neutral atom of aluminum has is 3 valence electrons.
What are valence electrons?
Valence electrons are those electrons in the outermost parts of elements that can be combined or loned to other elements during chemical reactions. Aluminum has three electrons in the valence shell.
The total number of electrons that aluminum has is 13 and the 3P1 shell has three electrons. So, this is the number of valence electrons.
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Answer:
Aluminum has 13 electrons in a neutral atom. The 1S2, 2S2 and 2P6 shells are full, and so is the 3S2. The 3P1 shell has one electron in it (in Al's neutral atom) and that gives aluminum one lone valence electron and two "semi-valence" electrons which can be loaned out.
Explanation: