CHEMISTRY HIGH SCHOOL

Covalent bonding is when atomstransfer electrons

drop electrons

share electrons

create electrons

Answers

Answer 1
Answer: The correct answer is the 3rd option. Covalent bonding is when atoms share electrons. It is a chemical bond that involves the sharing of electron pairs. These pairs are called bonding pairs. Examples of compounds that has covalent bonds are CO2, organic compounds, lipids and proteins.
Answer 2
Answer:

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Describe how rows and columns in the modern periodic table are organized

Answers

They are organized by their atomic number 

Write the atomic symbols for isotopes with the following characteristics? 1)an oxygen atom with 10 neutrons 2)a neon atom with twelve neutrons 3)25 electrons and 28 neutrons 4)a mass number of 24 and 13 neutrons 5)a titanium atom with 25 neutrons

Answers

Isotopes are elements that differ in the number in neutrons while the numner of protons are the same. The answers of the questions are: 1) 18/8 O 2) 22/10 Ne 3) 53/25 Mn 4) 37/24 Cr 5) 106/81 Ti.

Which scientist did people think was insane so they dismissed his ideas for almost 2000 years?

Answers

Alfred Wegener


I think let me know if I am wrong

In lower concentrations, salts generally _____. dissolve precipitate liquefy solidify

Answers

Answer : In lower concentrations, salts generally dissolve.

Explanation :

As we know that the solution is made by the combination of the solute and the solvent.

Solute is the substance which dissolved in the solvent and the solvent is the substance or liquid that dissolves the solute.

In the lower concentrations, the amount of solute is less than the solvent that means the more amount of solute can be dissolves into the solvent.

In the higher concentrations, the amount of solute is more than the solvent that means the more amount of solute can not be dissolves into the solvent.

Hence, in lower concentrations, salts generally dissolve.
The first one, dissolve.

The isotope atoms differ in ?

Answers

An isotope is formed basically when the amount of neutrons are different than the amount of protons in the nucleus. Therefore, we'd get a variation in the atomic mass (number of neutrons and protons). This is what makes isotopes different.

So, the answer would be: Isotope atoms differ in neutrons.

Which type of reaction releases the greatest amount of energy per mole of reactant?(1) combustion (2) decomposition (3) nuclear fusion (4) oxidation-reduction

Answers

Nuclear fusion.

Nuclear fusion reactions release a lot of energy

Explanation:

In natural philosophy, the nuclear reaction could be a reaction during which 2 or additional atomic nuclei identical enough to create one or additional completely different atomic nuclei and subatomic particles (neutrons or protons). The distinction in mass between the reactants and product is manifested because the unharness of enormous amounts of energy.
 (3) nuclear fusion. Nuclear fusion reactions release a lot of energy
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