CHEMISTRY HIGH SCHOOL

Question 1 (1 point) In this analogy, adding more students is analogous to:

Question 1 options:

Decreasing the volume of the reaction container.


Adding more particles of reactants.


Adding a chemical catalyst.


Increasing the temperature of the reaction.

Question 2 (1 point)
In this analogy, shrinking the hallways is analogous to:


Question 2 options:

Decreasing the volume of the reaction container.


Adding more particles of reactants.


Adding a chemical catalyst.


Increasing the temperature of the reaction.

Question 3 (1 point)
chemical catalyst helps change the rate of a chemical reaction by

Question 3 options:

Adding more reactants


Decreasing the activation energy


Increasing the activation energy


Adding more products

Question 4 (1 point)
In this analogy, shortening the passing periods is analogous to:

Question 4 options:

Decreasing the volume of the reaction container.


Adding more particles of reactants.


Adding a chemical catalyst.


Increasing the temperature of the reaction.

Question 5 (1 point)
In this analogy, hiring a matchmaker is analogous to:

Question 5 options:

Decreasing the volume of the reaction container.


Adding more particles of reactants.


Adding a chemical catalyst.


Increasing the temperature of the reaction.

Question 6 (1 point)
What are two conditions that must be met in order for a chemical reaction to take place?

Question 6 options:

Collisions with the proper orientation


Sufficient activation energy


Appropriate coefficient of friction


Both A and B


Both B and C

Answers

Answer 1
Answer:

Answer:D - adding a catalyst

Explanation:
Answer 2
Answer:

Final answer:

In this analogy, adding more students is analogous to adding more particles of reactants in a chemical reaction. Shrinking the hallways is analogous to decreasing the volume of the reaction container. A chemical catalyst helps change the rate of a chemical reaction by decreasing the activation energy.

Explanation:

Question 1: Adding more students in this analogy is analogous to adding more particles of reactants in a chemical reaction. Just like adding more students can increase the amount of activity and interactions in a classroom, adding more particles of reactants can increase the collision frequency and hence the reaction rate.

Question 2: Shrinking the hallways in this analogy is analogous to decreasing the volume of the reaction container in a chemical reaction. Just like shrinking the hallways restricts the movement of students, decreasing the volume of the reaction container restricts the movement of particles and increases the collision frequency.

Question 3: A chemical catalyst helps change the rate of a chemical reaction by decreasing the activation energy required for the reaction to occur. It provides an alternate reaction pathway with a lower activation energy, allowing more particles to have sufficient energy to react.

Question 4: Shortening the passing periods in this analogy is analogous to increasing the temperature of the reaction in a chemical reaction. Just like shortening the passing periods allows students to move faster and increases their chances of colliding, increasing the temperature of the reaction increases the kinetic energy of particles and enhances their collision frequency.

Question 5: Hiring a matchmaker in this analogy is analogous to adding a chemical catalyst in a chemical reaction. Just as a matchmaker facilitates the meeting of compatible people, a chemical catalyst facilitates the reaction between reactant particles, increasing the reaction rate.

Question 6: Two conditions that must be met for a chemical reaction to take place are collisions with the proper orientation and sufficient activation energy. Collisions between reactant particles must occur with the proper orientation to enable the formation of new chemical bonds, and these collisions must also have sufficient energy to overcome the activation energy barrier.

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In a chemical equation the arrow (indicating a reaction) points in which direction

Answers

As previously stated, depending on if the reaction is reversible it will point in both left and right directions. If it is irreversible it points to the right.
Depending if the reaction is a reversible or an irreversible one, the direction of the arrow will point in one direction or 2 directions from reactants to products.

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.

Which of the following is true of solids?a. All solids have equal melting points.
b. Ionic solids have higher melting points than molecular solids.
c. Molecular solids have higher melting points than all other types of solids.
d. It is impossible for solids to melt; therefore solids do not have melting points.

Answers

B. Ionic solids have higher melting points than molecular solids.

need help in getting a element superhero and the element i choose is Helium can you give me some ideas of a superhero to make using helium as the element?

Answers

you could design the hero with the powers of helium which then u can describe why u made the character with thoose powers 

What is the word equation for molecules of magnesium reacting with molecules of oxygen to produce molecules of magnesium oxide?magnesium + magnesium oxide = oxygen
magnesium + oxygen =magnesium oxide
magnesium oxide = magnesium
magnesium + oxygen magnesium + oxygen

Answers

Answer:   magnesium + oxygen =magnesium oxide

Explanation:  When Magnesium reacts with the molecules of oxygen , Magnesium oxide is produced.

                        Mg (s) + O (g)   →   MgO (s)

In this equation, both magnesium and oxygen are present in its elemental state.

Magnesium is present in solid form and oxygen is present in gaseous form.

The Bonding between the Magnesium and the oxygen is purely IONIC bonding as Magnesium loses its 2 valence electrons to complete its octet and oxygen gains its electrons to make its electron count 8 in the valence shell.

Answer: (B) Magnesium + oxygen =magnesium oxide

Explanation:

Select the correct answer. Which missing item would complete this beta decay reaction?
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Answers

Answer:

D. 33/16S please follow up me and give a thanks for my answer

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