A form of electricity which can attract things

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Answer 1

Answer:

A form of electricity which can attract things is static electricity. Static electricity is the result of an imbalance between negative and positive charges in an object. These charges built up o the surface of an object until they find a way to e released or discharged causing the attraction of things.

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What is the name of the binary compound Mg3 (PO3)2? A. magnesium phosphate B. magnesium phosphide C. Tri magnesium diphosphite D. magnesium phosphite

Answers

The correct option is D.

Another way to write the chemical formula of magnesium phosphite is Mg3O6P2. The compound is made up of three atoms of magnesium, six atoms of oxygen and two atoms of phosphorus. The compound has anti fungal properties and it is also used as fertilizer. The compound is partially soluble in waster and it can be yellow or green in color.

Cranberries and grapes may have therapeutic value. A cranberry company obtained the patent for a process to extract the oil from cranberry seeds. According to the patent, this oil can be used to treat breast cancer or to reduce its incidence. The oil can be used in drinks and foods. A grape juice company claims to have evidence that certain grapes have health benefits ranging from improving cardiovascular health to improving cognitive brain function in the elderly. These claims will be tested by the Food and Drug Administration (FDA) before the companies are allowed to market their products for “treating” ailments or “improving” health. Until then, the companies can describe that their products “help to maintain” or “support” health. Until studies support their claims, the companies cannot ascribe direct health benefits to their products.Why would the FDA perform tests when a cranberry company and a grape company have already conducted research on the same products?

A. The FDA is the only organization that can test if health actually improves.

B. Tests that are performed by any company which benefits financially are considered unreliable.

C. The FDA tests give reliability to the results of improved health obtained by each company.

D. Tests performed by the FDA follow established scientific methods, but those performed by companies do not.

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Answer is: C. The FDA tests give reliability to the results of improved health obtained by each company.

The FDA (The Food and Drug Administration) is a federal agency of the United States Department of Health and Human Services.

The FDA controls food safety, tobacco products, dietary supplements, prescription, pharmaceutical drugs, vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices, cosmetics and animal food.

The answer is D because the FDA they make sure all edible items are healthy not the company itself hope this helps :)

37 Which general trends in first ionization energy and electronegativity values are demonstrated by Group 15 elements as they are considered in order from top to bottom?(1) The first ionization energy decreases and the electronegativity decreases.(2) The first ionization energy increases and the electronegativity increases.
(3) The first ionization energy decreases and the electronegativity increases.
(4) The first ionization energy increases and the electronegativity decreases.

Answers

Correct answer: The first ionization energy decreases and the electronegativity decreases.

Reason:
As we move from top to bottom in a periodic table, atomic radius increases. Also, effective nuclear charge decreases. Due to this, energy required to remove the electron form valance shell decreases. Hence, ionization energy decreases from top to bottom.

In addition to this, metallic character increases from top to bottom. Metals have low electronegativity as compared to non-metals. Hence, electronegativilty value decreases from top to bottom.

The correct statement regarding the first ionization energy and electronegativity values in group 15 is as follows:

$\boxed{\left( 1 \right){\text{ The first ionization energy decreases and the electronegativity decreases}}}$

Further Explanation:

The amount of energy needed for the removal of the most loosely bound electron from a neutral isolated gaseous atom is termed as ionization energy, represented by IE. It depends on the ease of electron removal from the neutral atoms. If the electrons are removed easily, ionization energy will be less and vice-versa.

Ionization energy is called the first ionization energy when the first electron is removed from the atom. It is shown by $\left( {{\text{I}}{{\text{E}}_{\text{1}}}} \right)$ . Similarly, if the second electron is removed, ionization energy becomes the second ionization energy $\left( {{\text{I}}{{\text{E}}_{\text{2}}}} \right)$ .

The tendency of any element for electron attraction towards itself in a chemical bond is known as electronegativity. More the attracting tendency of the atom for electron, higher will be its electronegativity and vice-versa.

Atomic number and number of shells increase while going down group 15. Due to this, atomic size increases in the group from top to bottom. This increase in size results in weaker attractions between the outermost electrons and the atomic nucleus. So electrons are removed easily and therefore the first ionization energy decreases down this group.

Since atomic size increases from top to bottom of group 15, the attraction between the atomic nucleus and the electrons decreases. Therefore electronegativity also decreases down this group.

Therefore both the first ionization energy and electronegativity decrease down group 15.

Learn more:

Rank the elements according to first ionization energy: brainly.com/question/1550767
Arrange the following elements from greatest to least tendency to accept an electron: brainly.com/question/2107660

Answer details:

Grade: Senior School

Chapter: Periodic classification of elements

Subject: Chemistry

Keywords: ionization energy, first ionization energy, electronegativity, attraction, group 15, decrease.

Groups of cells that work together are called .

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group of tissues form a cell , and a group of cells form an organ

Which of the following statements describes a scientific law?a. A scientific law explains a set of events.
b. A scientific law describes what occurs every time in a situation.
c. A scientific law is constantly modified.
d. A scientific law is developed without experimentation.