Explain how molecular size plays a role in the strength of intermolecular forces.

Answers

Answer 1

Answer:

The intermolecular forces increase with increasing polarization of bonds. The strength of intermolecular forces (and therefore impact on boiling points) is ionic > hydrogen bonding > dipole dipole > dispersion. "Boiling point increases with molecular weight, and with surface area" says one article

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What is the chemical formula for zinc carbonate?(1) ZnCO3(2) Zn(CO3)2
(3) Zn2CO3
(4) Zn3CO3

Answers

The chemical formula for Zinc Carbonate is ZnCO3.

1) This method is a technique used in separating a less-dense substance from a denser one. A. Evaporation. B. Decantation. C. Picking. D. All of the above. 2) What will happen to the less-dense substance of mixtures if you separate them using decantation method? A. Remain the same. B. It will become solid. C. It will evaporate. D. It will float up. 3) In the process of decantation, the mixture is left: A. Behind. B. Undisturbed. C. Removed. D. None of the above. 4) How can the decantation method be useful in everyday life? A. It helps us to become more productive. B. It gives us satisfaction in our everyday living. C. It's just an ordinary technique. D. It helps us to make our everyday living more efficient and easier.

Answers

Answer:

1. B Decantation. 2. D 3. B

Explanation:

This method is often used when dealing with mixtures of liquids or immiscible liquids with different densities

2. This is because the denser substance sinks to the bottom due to its higher density, while the less dense substance remains on the surface. It allows for the separation of the two substances based on their density.

3. The mixture is left undisturbed after the less dense substance has been poured off. This allows the denser substance to settle at the bottom while the lighter substance remains on top

4. It's a handy method for separating substances based on their density For example, if you have a mixture of oil and water, you can use decantation to separate the two. By letting the mixture sit undisturbed, the oil, being less dense, will float to the top, allowing you to carefully pour it off and separate it from the water.

Electrons located in the outermost shell of an atom are called _________ electrons. a. valence b. Border c. Octet d. rim

Answers

Valence shell (the only other answer you can really confuse this with is octet which refers to the outer electron shell of noble gases which are stable!)

Final answer:

Valence electrons are the electrons located in an atom's outermost shell. They play a critical role in chemical bonding and reactions and determine the atom's reactivity and placement in the Periodic Table.

Explanation:

The electrons located in the outermost shell of an atom are correctly referred to as valence electrons. These electrons play a crucial role in chemical bonding and reactions because they are the most distant from the atom's nucleus and thus, the most loosely bound, making them available for interactions with other atoms. For instance, when atoms interact to form a chemical bond, the valence electrons are often the ones that are shared, transferred, or involved in the bond formation. The number of valence electrons in an atom also determines the atom's reactivity and its placement in the Periodic Table.

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Jordan wonders why there is dew on the grass in the morning. He asks a few friends to see what they think. His friend Tasha says that there is dew on the grass because it always rains at night. Did Jordan find a scientific answer?

Answers

No because dew is water droplets that come from condensation rather than from rain coming at night

Jordan did not find a scientific answer if a warm clear day is followed by a cool clear evening Dew will likely form

Of the elements Na, C, Si, and P, which is a metal?a. Na
b. C
c. Si
d. P

Answers

Answer: Option (a) is the correct answer.

Explanation:

A metal is a substance which loses electron(s) in order to attain stability.

For example, sodium is an alkali metals with atomic number 11 and its electronic distribution is 2, 8, 1.

So, in order to attain stability sodium will readily lose 1 electron and forms $Na^(+)$ ion.

Whereas non-metals are the substances which gain electron(s) in order to attain stability.

For example, atomic number of carbon is 6 and its electronic configuration is 2, 4.

To attain stability a carbon atom shares it 4 valence electrons with another atom.

Thus, we can conclude that out of the given options, Na is a metal.

a. Na - Sodium

Sodium is an alkali metal in Group 1A of the periodic table. Metals are found in groups 1A, 2A, and 3A, along with the transition and inner transition metals.

All of the noble gas elements except neon have 8 electrons in their outermost energy level. True or false

Answers

To solve this we must be knowing each and every concept related to element. Therefore, "all of the noble gas elements except neon have 8 electrons in their outermost energy level" is a false element.

What is element?

A chemical element represents a material that cannot be degraded chemically. Although chemical processes do not modify atoms, nuclear reactions can produce new elements.

Elements are classified according to the amount of protons they have. An element's atoms typically have the same amount of protons, but differing amounts of electrons or neutrons.

There are 118 recognized elements. Element 120.1 is being researched. When element 120 is created and validated, the periodic table must be updated to include it. A numerical subscript following an element in a chemical formula mean number of atoms. All of the noble gas elements except have 8 electrons in their outermost energy level.

Therefore, "all of the noble gas elements except neon have 8 electrons in their outermost energy level" is a false element.

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False I think neon also has 8 electrons on it's outermost shell, I'm not rlly sure about that answer though.

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At standard pressure when NaCl is added to water,the solution will have a

Elements in the same group on the periodic table have the same number of electrons number of protons number of neutrons number of valence electrons

Consider the reaction. mc015-1.jpg How many grams of N2 are required to produce 100.0 L of NH3 at STP?

How would the equilibrium change if NO2 were added to SO2(g) + NO2(g) NO(g) + SO3(g) + heat?A. The equilibrium constant would increase. B. The amount of NO and SO3 would decrease. C. The amount of NO and SO3 would increase. D. The amount of NO2 and SO2 would increase.