Which is an example of an atom?A) The smallest unit of Ne.
B) The smallest unit of P4.
C) The smallest unit of NH3.
D) The smallest unit of H2O.
Answers
Answer:
Option A
Explanation:
An atom is the smallest particle of a chemical element that can exist.
Using the method of elimination;
Option A - This correct because an atom is the smallest unit of a chemical element ( Neon). It fits the definition given above.
Option B - This option is wrong because P4 is a substance that is made up of four atoms of the same element, so it is a molecular element and not an atom.
A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
Option C - This option is wrong because NH3 is a compound containing two different elements.
Option D - This option is wrong because H2O is a compound containing two different elements.
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Answers
I would say the answer is A. Plow the soil many times to lessen the chance of the topsoil being blown away.
Hope this helps !
Answer:
C: water crops often to wet soil.
Explanation:
Working in the plan industry, it becomes obvious that when watering the plants often, it will pack down the topsoil into the plant. Topsoil is lose at first as stated above, but when enough water gets on it, it becomes almost like mud. This is the kind of topsoil you want. No wind or water will mess it up because it already it watered! It will also help the grow. In addition, plowing is not correct because you only need to plow twice in the plant process. Before you plant the seeds, and to harvest the crops. If you plow to soon and often, you won’t have any plants.
B. Solids are high in density and compressible.
C. Solids are low in density and incompressible.
D. Solids are high in density and incompressible.
Answers
Answer: Option (D) is the correct answer.
Explanation:
Solids are the substances whose molecules are closely packed together due strong inter molecular forces between them. This causes the solid to have a fixed shape and volume.
Whereas density is mass divided by per unit volume.
Mathematically, Density =
Since, density is proportional to mass. So, more is the mass that is, more is the number of molecules held together by strong forces more will be its density.
Therefore, we can conclude that the statement solids are high in density and incompressible, best describes solids.
Multiple answers could be chosen, just due to the fact that a solid is nothing more than just an object that cannot change it's physical shape into an object; just as water would. a solid can have a low density; such as paper, plastics, or even just a piece of wood.
But think of a block of ice. You can break it, and crush it. It cannot be formed into any other shape. If you did break it, it only would make more ice fragments. And it's next phase is a liquid; if it were to be melted.
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Answer:
When the bell is rung the switch closes allowing electricity to flow making the hammer hit the bell, making the sound to alert people in the house.
Explanation:
kinds of cells?
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Answer:
stem cells
Explanation:
hope it helps