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3 years ago

Defintion of elements

Chemistry

2 answers:

andreyandreev [35.5K]3 years ago

8 0

Answer:

Chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.

Explanation:

AlexFokin [52]3 years ago

7 0

Answer:Chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.

Explanation:

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Which statement best describes the compressibility of a gas?

maria [59]

The answer to the question stated above is:
 Gas is easily compressible because the molecules of a gas are much further apart than those of a solid.

characteristic properties of gases:

(1) they are easy to compress,

(2) they expand to fill their containers, and

(3) they occupy far more space than the liquids or solids from which they form.

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3 years ago

True or false a measurement must include a unit

Arturiano [62]

HI :)

True

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3 years ago

The primary role of the carbonic-acid-bicarbonate buffer system is to

tekilochka [14]

Answer:

The primary role of the carbonic-acid-bicarbonate buffer system is to neutralize the hydronium ions forming carbonic acid and water when any acidic substance enter the bloodstream.

Explanation:

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4 years ago

Identify the ion ratios needed to form neutral compounds from the ions below. The metal ion (cation) is listed first, and the no

Natasha2012 [34]

To figure out the ratios of these compounds, it is important to remember that the charge of these compounds must be neutral.

So in order to make them neutral, you must have specific ratios:

$Na^{+}: Br^{-} =1:1$ ; This is true because they both have a charge of magnitude of 1.

$Al^{3+}: Cl^{-}=1:3$ ; We need 3 chlorine atoms because we need to balance out the charge from the 3+ charge of aluminum - therefore since chlorine has a 1- charge, we need 3 atoms.

$Mg^{2+}: O^{2-}=1:1$ ; The charges of the magnesium (2+) are balanced with the oxygen charge (2-).

$Al^{3+}: O^{2-}=2:3$ ; This is correct because if charges are like this, you must find the least common factor in order to know the ratio. The LCF is 6, therefore, for the atom with a 3+ charge, you need 2 of them, and for the atom with a 2- charge, you need 3 of them. This keeps the charge neutral.

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3 years ago

Read 2 more answers

What is a nonmetal in the same group as Pb

kupik [55]

Answer:

Carbon

Explanation:

The non metal in the same group as Pb is carbon or C .

I hope this helps you.

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3 years ago