CHEMISTRY HIGH SCHOOL

Remember it!Determine the statement that accurately explains the
endothermic and exothermic reactions.
4
O Endothermic reactions absorb heat
energy while exothermic reactions
release heat energy.
O Exothermic reactions absorb heat
energy while endothermic reactions
release heat energy.
O Endothermic and exothermic reactions
absorb thermal energy.
O Endothermic and exothermic reactions
release thermal energy.
REM
The prefix exo-
applied to a che
mean energy
re

Answers

Answer 1
Answer:

Statement-1 is the correct answer that is Endothermic reactions absorb heat energy while exothermic reactions release heat energy.

How can we distinguish between exothermic and endothermic processes?

Chemical reactions that release energy are referred to as exothermic. More energy is produced than is needed to break the bonds between the reactants when bonds are formed in the byproducts of exothermic processes.

Chemical processes that either use or absorb energy are referred to as endothermic. In endothermic reactions, more energy is absorbed when bonds in the reactants are broken than is released when new bonds are formed in the products. Since an isothermic chemical reaction uses exactly as much energy as it produces, there is no net energy change.

Therefore, the first statement is the right response.

To know more about exothermic, check out:

brainly.com/question/2924714

#SPJ1

Related Questions

What particle is needed to complete the following equation 14 7 n + 14 6 c +1 1 h
Which hand is negatively charged? Ο Α. OB. Oc. OD. ​
All of the following can increase free radical production, EXCEPT: A)Smoking B)Tanning booths and radiation. C)All of these options increase free radical production. D)Consuming pesticides and chemical additives. E)Lead and other heavy metals exposure.
Which radioisotope is used for diagnosing thyroid disorders?(1) U-238 (3) I-131 (2) Pb-206 (4) Co-60
Which subatomic particle is not found in the nucleus of an atom

The energy stored in atoms is released when electricity is made with _____ power

Answers

The energy stored in atoms is released when electricity is made with nuclear power.

Ammonium hydroxide ionizes as follows: NH4OH(s) NH4 +(aq) + OH-(aq). If an excess of ammonium salt, such as NH4Cl (which ionizes to give NH4 +(aq) ions) is added to the equilibrium shown above, you could predict that the result will be to....

Answers

Answer:

Concentration of OH- ions will be lowered

Explanation:

NH4OH is a weak electrolyte whereas NH4Cl is a strong electrolyte. The ionization can be depicted as follows:

NH4OH ↔ NH4+ + OH-

NH4Cl → NH4+ + Cl-

Addition of NH4Cl to NH4OH introduces a common ion i.e. NH4+.

The presence of a common ion supplied by a strong electrolyte will suppress the ionization of the weak electrolyte, this is called common ion effect.

In this case, the ionization of NH4OH will be suppressed which will lower the concentration of OH- ions.
Decrease the concentration of OH-

0.500dkg = ?g

HELP PLS!!!!

Answers

Answer:10 grams

Explanation:

An unknown solution has a ph of 8. how would you classify this solution? a. acidic
b. neutral
c. basic
d. there is not enough information to answer the question

Answers

I believe the correct answer from the choices listed above is option C. You would classify this solution as basic since it has the pH of more than 7 which signifies a basic solution. Hope this answers the question. Have a nice day. Feel free to ask more questions.

On a temperature versus time graph, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change?

Answers

the answer is ALWAYS THE SAME.

Answer:B

Explanation:

Which pair below describes isotopes of the same element? A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons B) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons C) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons D) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons

Answers

Answer: The atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.

Explanation:

Isotopes are defined as the chemical species that belong to the same element but differ in their mass number.

This also means that the chemical species have same number of protons and electrons but different number of neutrons.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

From the given options:

The elements having same number of protons will be the isotopes of same element.

Hence, the atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.
Other Questions
How many moles of silver chloride are produced from 15.0 mol of silver nitrate
The heat of formation of Fe2O3(s) is –826.0 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 3O2(g) → 2Fe2 O3(s) when a 53.99-g sample of iron is reacted.
How much does 9.8 liters of ammonia (NH3) weigh at standard temperature and pressure (273 K and 100 kPa)?
An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have?30356595