CHEMISTRY HIGH SCHOOL

At atom that has only one electron in its valence electron shell is ________ chemically reactive.a. not
b. mildly
c. highly
d. The name of the element is needed to figure this out.

Answers

Answer 1
Answer: The correct answer is C. An atom having only one valence electron is highly chemically reactive. The valence electron says a lot to the reactivity of an atom. For example, sodium has only one valence electron which makes it so reactive and unstable. The alkali metals have only 1 valence electron.
Answer 2
Answer:

Answer:The correct answer is  C. Highly

Explanation:

its correct because I got it correct on my test sooo..yuup.!

-hope this helps.!!

Related Questions

When elements that form a mineral dissolve in hot water, they form a mixture called a(n) ______.?
What is the main product of the calvin cycle?
How many moles of ethylene (C2H4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 Kelvin?
Lee and Celia are lab partners. While Celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. what should they do next? A. Lee should continue working with Celia after helping wipe off her arm. B. Lee should tell the teacher what happened to Celia when he leaves the lab. C. Lee should tell the teacher while Celia washes her arm with soap and water. D. Lee should have Celia stand in the safety shower while another student tells the teacher.
Alchemy is a branch of ancient knowledge that states lead metal is a form of gold metal. Which of these best explains whether alchemy is a science or pseudoscience? It is a science because ancient knowledge is often reliable. It is a science because metallurgy is known to be a branch of science. It is pseudoscience because ancient knowledge is mystical yet reliable. It is pseudoscience because each metal is known to be a unique element.

Balance the following oxidation-reduction reaction and indicate which atoms have undergone oxidation and reduction. ____HNO3 + ____S ---> ____NO + ____H2SO4

Answers

Explanation:

An equation that contains equal number of atoms on both reactant and product side is known as a balanced chemical equation.

Whereas when there will be increase in oxidation number of the atom then it is known as oxidation. When there is decrease in oxidation number of the atom then it is known as reduction.

For example, 4HNO_(3) + S \rightarrow NO + H_(2)SO_(4) + H_(2)O

Oxidation half reaction :S \rightarrow H_(2)SO_(4) + 6e^(-)

Reduction half reaction :HNO_(3) + 3e^(-) \rightarrow NO

Therefore, we can conclude that sulfur atom has undergone oxidation and nitrogen atom has undergone reduction.
The following oxidation-reduction reaction and indicate which atoms have undergone oxidation and reduction.
2HNO3 + S ---> 2NO + H2SO4

An ion that consists of 7 protons, 6 neutrons, and 10 electrons has a net charge of(I ) 4- (3) 3+(2) 3- (4) 4+

Answers

Answer : The correct option is 2.

Explanation :

Number of protons = 7

Number of neutrons = 6

Number of electrons = 10

Protons are those which carries positive charge.

Electrons are those which carries negative charge.

Neutrons are those which do not carry any charge that means neutrons are neutral.

The net charge on an ion = Number of protons present in an ion + Number of electrons present in an ion

The net charge on an ion = (+7) + (-10) = -3

Therefore, the net charge on an ion is (-3).
The answer is (2) 3-. The proton has one positive charge. Neutrons do not have charge. And electron has one negative charge. So the net charge is 3 negative charge.

Increasing temperature increases the number of collisions and the potential energy of the colliding molecules anddecreases the reaction rate.
True or False PLZ HELP!!

Answers

Increasing temperature does increase the amount of collision but it increases the kinetic energy of the molecules not the potential energy. Potential energy brings molecules together or apart (depending) and kinetic energy makes the molecules move around or not. Hope this helps

Compared to a phosphorus atom, a P3- ion has

Answers

Answer:

Three more electrons

Explanation:

Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:

  • It has a bigger atomic radius due to the extra electrons and the weaker attraction the protons have to them.
  • It can react as a base (taking electrons)
Compared to a phosphorus atom, a P3- ion has more electrons and a larger radius. With a negative charge means there are more electron than protons, this increases the radius because positive charge is trying to hold a larger negative charge. Hope this helps

The science of using tree rings to determine absolute age is calleda. disconformity.
b. radiometric dating.
c. dendrochronology.
d. radioactive dating.

Answers

Option c. dendrochronology

tree rings or dendrochronology they allow to use it in calibration for carbon-14 on temporal placements of fragments of wood (from long dead trees).

Example Bristle cone pines (1957) 4723 years old
The best answer to the question that is being presented above would be letter c. Dendochronology is the science of using tree rings to determine absolute age. All the others are other forms of dating that would determine the tree's age.

The ratio of chromium to iron to carbon variesamong the different types of stainless steel.
Therefore, stainless steel is classified as
(1) a compound (3) a mixture
(2) an element (4) a substance

Answers

The correct answer is option 3. Stainless steel is a mixture of different substances. Mixture is defined us a system that is made up of two or more substances which are mixed but are not chemically combined. In stainless steel, the components are not chemically combined.

Answer: mixture

Explanation:

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water H_2O

Element is a pure substance which is composed of atoms of similar elements. It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present.Example: Alloys

As steel is made up of combination of carbon and chromium and are not present in any fixed ratio , steel is classified as a mixture.
Other Questions
What important role does surface tension play in everyday life?
According to atomic theory: a. the nucleus is positively charged. b. the nucleus contains both charged and uncharged particles. c. the electrons contribute very little to the total mass of the atom. d. the electrons are located in the atomic space outside the nucleus. e. all of these
Which of the following ions has the smallest radius? (1) F– (3) K (2) Cl– (4) Ca2
Water molecules attract to one another to form what kind of bonds?