1. Clouds form when water changes from a
A gas to liquid .
B liquid to gas.
C solid to gas
D solid to liquid.

Answer:

everything including the space...

hope it helps...

Answer:

where are the solid blocks?

Explanation:

Answer:

c or b

Explanation:

it is not d because my cats sleep all night

it is not a because i like cats but my friend loves dogs

Answer:

Answer is C

Explanation:

are cats more active at night than the day?

Answer:

Hunds rule is violated here.

Hunds rule : pairing of electrons takes place only if all the orbitals are filled with single electrons each.

Answer:

There are 3 non-metals in benzoic acid.

Explanation:

They are Hydrogen, Oxygen, and Carbon.

Answer:

1. from      2. to

Explanation:

Plants are unique organisms that can absorb nutrients and water through their root system, as well as carbon dioxide from the atmosphere. Soil quality and climate are the major determinants of plant distribution and growth.

Answer:

Reactants, Products is the answer i believe

Answer:

reactants, products

Explanation:

A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.

Answer:

thermal energy

Explanation:

the sun used thermal energy to melt the icecream

Answer:

in the modern periodic table elements are raised according to increasing atomic number

Answer:

VVV

Explanation:

Covalent bonds are formed when atoms share electrons and ionic bonds are formed when positive and negative ions bond to form an ionic compound.

Answer:

I honestly think is hair length

Answer:

B- the number of protons and the number of electrons.

Explanation:

The atomic number equals the change on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in thw neutral atom. The atomic number has the symbol Z.

Explanation:

we know that,

From Left to right (Period) atomic radius decreases

and

From Top to bottom (Group) atomic radius increases.

Li, C, O, F belongs to same period.

So,

Atomic radius decreases if we go left to right

Increasing order of Atomic radius -

Li > C > O > F

Therefore,

Option C is correct ✔.

Answer: C

Explanation:

Answer:

Option A. Na⁺

Explanation:

Floride ion (F¯) simply indicates that the fluorine atom has gain an extra electron.

Thus, the electronic configuration of the fluoride ion (F¯) can be written as follow:

F¯ (10) => 1s² 2s²2p⁶

Next, we shall determine the electronic configuration of the element given in options to see which is the same as that of the fluoride ion (F¯). This is illustrated below:

Na⁺ (10) => 1s² 2s²2p⁶

Na (11) => 1s² 2s²2p⁶ 3s¹

Cl (17) => 1s² 2s²2p⁶ 3s²3p⁵

Cl¯ (18) => 1s² 2s²2p⁶ 3s²3p⁶

From the above illustrations, we can see that the fluoride ion (F¯) has the same electronic configuration as Na⁺.

Each element is made up of electrons and these electrons are filled in different shells. These are the following shells in the electrons:

According to the question, the fluoride ion has 10 electrons in its 2 shells, that is 2 in K shell and 8 in L shell.

A similar number of shell and electrons to the fluoride ion is sodium ion ([tex]Na^{+}[/tex])

The [tex]Na^+[/tex]has a total 10 number of electrons, hence the electronic configuration is 2 and 8.

Therefore, the [tex]Na^+[/tex] is the correct option.

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Answer:

neutrons in c,o,b,h

Explanation:

i think so

Answer:

6860

Explanation:

Answer:

It can help identify elements quicker.

Explanation:

Answer:

Reactivity! :)

Explanation:

I just took the test! "2.13 Physical and Chemical Changes"

Reactivity is the chemical property of the substance. Therefore, option (C) is correct.

A chemical property can be described as the property that causes a change in the chemical structure of the substance. A chemical property of a substance can be seen in chemical change or reaction in the substance.

A chemical property represents the ability of a substance to combine with other substances or convert into a different product.  The chemical composition is the identity of the substance and on changing it the substance turns into a different substance.

A chemical property gets determined when a change occurs in the chemical identity of the substance. The chemical properties such as toxicity, reactivity, enthalpy of formation, the heat of combustion, oxidation states, radioactivity, etc.

The color, melting point, and boiling point are the physical properties of a substance while reactivity is the chemical property.

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Answer:

Química orgánica

Explanation:

Answer:

The Answer Is Quarks

Explanation:

Its mad up of Quarks

i hope this helps

pls make me brilliant or something

The particle that is labeled with a question mark (?) in the diagram is Quarks

Quarks are elementary particles and fundamental constituents of matter. They are considered the smallest known particles that make up protons and neutrons, which are the building blocks of atomic nuclei. Quarks are classified as fermions, which means they follow the rules of quantum mechanics and obey the Pauli exclusion principle.

There are six known types, or flavors, of quarks: up (u), down (d), charm (c), strange (s), top (t), and bottom (b). Each quark flavor has a unique set of properties, including mass, electric charge, and the way they interact with other particles through the strong nuclear force. The up and down quarks are the lightest and most common, while the top quark is the heaviest.

One notable property of quarks is that they possess a fractional electric charge. The up quark has a charge of +2/3 (e/3), while the down quark has a charge of -1/3 (-e/3), where "e" represents the elementary charge carried by an electron. Quarks are never found in isolation due to the confinement principle, which means they are always bound together in composite particles called hadrons.

Quarks interact through the strong nuclear force, which is mediated by particles called gluons. This force binds quarks together to form protons and neutrons, and also governs the interactions within atomic nuclei.

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Answer:

yes

Explanation:

Answer:

Its 19.

Explanation:

K (potassium) has 19 electron according to the atomic number in the periodic table. The atomic number tells you the number of protons and electrons.

Answer:

h2s

Explanation:

The closest chemical analogue for water is hydrogen sulphide or H₂S. Because, both oxygen and sulfur are same group elements and shows similar properties.

Hydrogen sulphide or  H₂S is a covalent compound formed by the combination of two hydrogens and one sulphur atoms. In this compound, each hydrogen shares one electron to sulfur and sulfur shares its two valence electrons to each hydrogen.

Water is  H₂O, which is formed by the strong hydrogen bonding between hydrogen and oxygen and it exists as liquid mostly. Most of the compounds can be dissolved in water.

Lithium oxide Li₂O is a covalent compound with partial ionic character and it does not exhibit any similarity with water in any case.

Bothe sulfur and oxygen are in 16th group. They are gases with high electronegativity. Hence, both H₂O, H₂S are polar compounds. Both sulfur and oxygen have affinity towards hydrogen. Both have similar shape and bond angle.

Moreover, H₂S can dissolve some minerals and acts as a good solvent like water.

Hence, the better substitute for water is H₂S.

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Answer: non metal

Explanation:

Nonmetals are dull, possess high ionization energies and electronegatives and are typically poor electricity conductors as they're insulators.

Non metals are also brittle and possess low melting point. Therefore, with the explanation, the sample is most likely a non metal.

Answer:

its 1 not negative

the atom shown below was hydrogen, known as H.

1. A ➡️ Metals

2. B ➡️ Metalloids

3. C ➡️ Non-metals

4. D- Column ➡️ Group/Family

5. E- Row ➡️ Period

6. F ➡️ Halogens

7. G ➡️ Noble gases

Explanation:

The Periodic Table is known to be an array of chemical elements that are organized in order of their increasing atomic number. That arrangement gives a recurring pattern known as the periodic law in their properties.

Periods are found in the horizontal rows (across) the periodic table, while groups are found in the vertical columns (down) the table.

The Periodic Table was discovered by D.I Mendeleev.

Answer:

Its B. The atoms form a bond with a bond lenth of 75 pm

Answer:

to show that the consumer can use it in a way that the lab cant. with the consumer seeing that the product they're purchasing is good quality can lead to a demand for the product!

Explanation:

Answer:

The mass of 2.0 mol of C02 is 44 grams

Explanation:

The weight of CO2 is 44 grams per mole (1 x 12 grams/mole for the carbon and 2 x 16 grams/mole for the oxygen atoms)

According to the mole concept, the mass of 2.0 mole of carbon dioxide is 88.02 u.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons.Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Mass can be calculated by the number of moles formula as,

mass=number of moles×molar mass

=2×44.01=88.02 u.

Thus, the mass of 2.0 mole of carbon dioxide is 88.02 u.

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