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3 years ago

What does sodium react with

Chemistry

1 answer:

Pani-rosa [81]3 years ago

5 0

Sodium reacts with water to form a colorless solution of sodium hydroxide and hydrogen gas.

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Why was plastic first invented? How is plastic bad for the environment?

olya-2409 [2.1K]

Answer: The first plastic based on a synthetic polymer was invented in 1907. Plastic sticks around in the environment for ages, threatening wildlife and spreading toxins.

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3 years ago

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What particles form the nucleus of an atoms?

melomori [17]

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

Protons are the positively charged particles in an atom
Neutrons do not carry any charges.
Sum of the protons and neutrons gives the mass number of the atom.

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3 years ago

Consider the elements: Na, Mg, Al, Si, P.

Olegator [25]

Answer:

The elements mentioned in the series are Na, Mg, Al, Si, and P. It can be seen that all these elements are located in the same period. The atomic number of the mentioned elements are Na-11, Mg-12, Al-13, Si-14, and P-15.

a) There will be an increase in the ionization energy with the increase in the element's atomic number across a period. More energy is needed to withdraw an electron from a completely occupied shell in comparison to an incompletely occupied shell.

The atomic number of Na is 11. When one electron is withdrawn from Na, it gets converted into the inert gas configuration of Ne. Thus, it will require more energy to withdraw the second electron from Na. Hence, Na exhibits the lowest second ionization energy.

b) Across the period, with an increase in the element's atomic number, the atomic radii reduces from left to right. Thus, P exhibits the smallest atomic radius.

c) The metallic nature of the elements reduces from left to right across a period in the periodic table. Thus, P is the least metallic element.

d) Diamagnetic signifies towards the element that exhibits pair electrons in its sub-shells. The electronic configuration of Mg is,

1s2 2s2 2p6 3s2

In Mg, no unpaired electrons are present, while all the remaining elements mentioned exhibit unpaired electrons in their valence shell. Thus, Mg is the diamagnetic element.

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3 years ago

How do you balance the equation Hydrogen plus Oxygen yield water?

Andre45 [30]

Hey there! Hello!

Not sure if you still need the answer to this question, but I'd love to help out if you do.

So, the way to balance this equation is pretty simple. First, you need to keep in mind that molecules of hydrogen and oxygen do not come in single molecules, but in bonded pairs, represented by H2 and O2.

$H2+O2=H2O$

But, that's incorrect. The combination of 2 hydrogen molecules with 1 oxygen molecule yields water, but that leaves one oxygen molecule leftover. When broken down, this is how many of each molecule is on each side of the previously stated equation:

Left:
H: 2
O: 2

Right:
H: 2
O: 1

So we have to multiply H2O on the right side by 2 in order to get this:

$H2+O2=2(H2O)$

Left:
H: 2
O: 2

Right:
H: 4
O: 2

The last step is to multiply H2 on the left by two to make it match up with the right side, balancing the equation:

$2(H2)+O2=2(H2O)$

Left:
H: 4
O: 2

Right:
H: 4
O: 2

That makes our equation balanced! I hope this helped you out, feel free to ask any additional questions if you need further clarification. :-)

5 0

3 years ago

True or false The difference between solids and liquids is that solids have definite shape and volume, while liquids have no def

Fantom [35]

Answer:

False

Explanation:

4 0

3 years ago

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