CHEMISTRY MIDDLE SCHOOL

The greenhouse effect A. is caused by pollution released into the atmosphere
B. does not occur naturally
C. is a naturally occurring process
D. needs to be reversed to save the planet

Answers

Answer 1
Answer: The greenhouse effect C. is a naturally occurring process. What many people fail to realize is that the greenhouse effect is what keeps our Earth warm and habitable for us to live on. Without the greenhouse effect, the Earth would be colder and would not be able to sustain life.

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Which type of change does not break or form bonds? A.physical B. Chemical change C. Nuclear change D. Molecular change

Answers

It is a physical change.
i think phyisical although i may be wrong

What is the name for NH

Answers

Answer:

Due to the lack of context for your question I’m not completely sure which you are talking about but NH can be Imidogen or it could be ammonium which is NH4^1+

What is the idea of continental Drift?

Answers

Continental drifts was a theory that explained in how continent shift position on the earth surface.

The theory was presented in 1912 by Alfred Wegener, who was a geophysicist and meteorologists. The theory also explained the reason why plant and animal fossils that look similar are found all over the continents.

Further Explanation

Wegener had the thought that all the different continents were at a point joined together before it breaks up and moves to their present position.  

Wegener published a book in 1915 called "The Origin of Continents and Oceans. In this book, he further explained the theory of continental drifts but the theory was widely criticized by geologists because to them, wegener did not have a good model to properly explain how the continent drifted apart.

From Wegener explanation, there were certain things he laid emphasis on, which were very accurate, like the observation about fossils and rock. Wegener thought that the Continent might have plowed through the ocean crust just like icebreakers smashing through ice.

Although, Weneger continental drift theory was discarded but there are certain facts that he established. The theory brought the idea of moving continents to geoscience and after many decades, scientists confirms most of the things the theory covered. For example, the idea that the past existence of supercontinent joined all the landmass of the world as one.

LEARN MORE:

KEYWORDS:

  • continental drift
  • animal and plant fossil
  • Alfred Wegener
  • geoscience
  • landmass
The idea is that all continents move at a rate of approximately 2 inches per year because their moving ever since pangea (all continents were one) separated

Definition of mitochondria

Answers

Mitochondria is a spherical or elongated organelle in the cytoplasm of nearly all eukaryotic cells, containing genetic material and many enzymes importantfor cell metabolism, including those responsible for the conversion of food to usable energy.
an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers

What information could you use to determine the atomic number of an unknown elementthat has a mass number of 22?
O
A. number of ions
B. number of isotopes
C. number of neutrons
O
D. number of electrons

Answers

Answer:

The correct answer is option C.

Explanation:

Atomic number(Z) = Total number of protons present in a nucleus of an atom.

Atomic mass(M) = Sum of protons and neutrons present in the nucleus

M = Z + Total number of neutrons

If we are given with mass number of an element and we are said to determine the atomic number of the compound:

22  = Z + Total number of neutrons

Z = 22 - Total number of neutrons

We will require total number of neutrons to determine the atomic number of an unknown elementthat has a mass number of 22.
Answer:
The mass of an atom is based on the number of protons and neutrons in its nucleus.

O2 +C8H18--> H2O + CO2

Answers

Balanced it would be:25O2+2C8H18-->18H2O+16CO2because when multiplied out:
O on the left is 50 and so is O on the right
C on the left is 16 and so is C on the right
H on the left is 36 and so is H on the right
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