CHEMISTRY HIGH SCHOOL

Help PLEASE :DElaborate on the changes in molecular motion of particles as they change from solid to liquid to gas.
Question 16 options:
This is the answer >>>>>>>>As the phase changes occur, the freedom of motion of the particles increases.
As the phase changes occur, the freedom of motion of the particles decreases.
As the phase changes occur, the freedom of motion of the particles compresses.
As the phase changes occur, the freedom of motion of the particles is constant.

Answers

Answer 1
Answer:

Answer:

A) As the phase changes occur, the freedom of motion of the particles increases.

Explanation:

As the phase changes occur, the freedom of motion of the particles increases.

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Which process uses energy to combine inorganic molecules to synthesize organic molecules

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Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can be later released to fuel the organisms activities.

From what class(es) of elements is the following compound made? copper || chloride metal and metalloid
metal and nonmetal
metalloid and nonmetal
two metals

Answers

Answer: The correct answer is metal and non-metal.

Explanation:

Elements are mainly divided into 3 classes in the periodic table.

1.) Metals: The element which lie on the left side of the periodic table are mainly metals. These elements loose electron easily and form positively charged species. These elements are present in the highest proportion in the periodic table.

2.) Non-metals: The elements which lie on the right side of the periodic table are considered as non-metals. These elements gain electrons easily and form negatively charged species.

3.) Metalloids: These lie between metals and non-metals and show the properties of both metals and non-metals.

Copper lie in the period 4 and group 11 of the periodic table and it can easily loose electron and hence, it is considered as a metal.

Chlorine lie in the period 3 and group 17 of the periodic table and it can easily gain electron and hence, considered as a non-metal.

Therefore, the correct answer is metal and non-metal.
Metal and non metal because copper is a metal and chloride is a non metal

7. Which of the following has to happen before the eardrum begins to vibrate with the same frequency as the source of the sound waves? A. Vibrations have to be transmitted to the fibers of the auditory nerve.
B. Impulses have to be sent to the brain through the auditory nerve.
C. The brain has to interpret the direction from which the sounds are being delivered.
D. The outer ear has to collect the sound waves and lead them to the middle ear.

Answers

The outer ear has to collect the sound waves and lead them to the middle ear and this is what has to happen before the eardrum begins to vibrate with the same frequency as the source of the sound waves. The correct option among all the options that are given in the question is the last option or option "D".

Answer : Option D) The outer ear has to collect the sound waves and lead them to the middle ear.

Explanation : Hearing is dependent on a series of complex steps that change vibrations of sound waves in the air into electrical signals. At first the vibrations of sound waves gets collected by the outer ear and from there sound waves travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. The auditory nerve then carries these signals to the brain.

Which metal is more active than NI and less active than Zn?1. Cu
2. Cr
3. Mg
4. Pb

Answers

Answer : The correct option is, (2) Cr (Chromium)

Explanation :

The reactivity series of metal are arranged of the reactivity from the highest to the lowest. Reactivity series is used to determine the products of the single displacement reactions. In the single displacement reaction, the most reactive metal displaces the least reactive metal.

From the given reactivity series we conclude that there are two metal (Mg and Cr) are more reactive metal than the Ni and there are two metal (Pb and Cr) are less reactive metal than the Zn. So, the Cr (Chromium) is the metal which is more active than Ni and less active than Zn.

Hence, the correct option is, (2) Cr
Cr is more active than nickel and less active than zinc.

neon is a noble gases a very stable it does not readily combined with other elements which category does neon belong to

Answers

This is a nonmetal because gases cannot be metals

The interaction of tectonic plate boundaries is associated with which of the following events? Hurricanes Tropical storms Earthquakes Tornados Previous Question

Answers

Answer:

terremotos

Explanation:
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