CHEMISTRY MIDDLE SCHOOL

True or FalseWhen comparing an empirical formula to a molecular formula the subscripts after each element in both formulas are the same

Answers

Answer 1
Answer:

Answer: That's true.

Explanation:

If a single atom of an element in a molecule required a subscript,

then water would be  H₂O₁ , and salt would be  Na₁Cl₁ .

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5.The synthetic polymer which can be used as a substitute for wool for making sweaters and shawls isa. Nylon b. polyester c. terylene d. acrylic

What scientists do that is the basis for their investigations

Answers

The basis of any scientific investigation is a hypothesis and a research question. These guide your research and help you focus on an area that is narrow enough to study for meaningful results. The research question helps quantify how you are going to study the hypothesis.

What are five types of chemical weathering

Answers

Carbonation, hydrolysis, hydration, oxidation, and solution.

solution,carbonation,hydration,oxidation,and hydrolysis

The p subshell can hold up to eight electrons in an atom (2 points)
True or false?

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Answer: The statement is false

Explanation:

Electrons occupy a region in atoms known as orbitals or subs hell.  These orbitals include

I) S-orbital: it can occupy a maximum of two electrons

II) P-orbital: It occupies a maximum of six electrons

III) D-orbital: it occupies a maximum of ten electrons

F and G-orbitals as examples of other orbitals present.

A good illustration of the 6 electrons occupied by the P-subshell is seen in Sodium (Na) with atomic number of 11

Na = 1s2, 2S2 2p6, 3s1

Note: extra electrons are transferred to the next orbital
Answer: This statement is false!!

Explanation: the p sub-shell can hold a max of 6 and the d sub-shell can hold a max of 10

True or false in general, winds are named for the direction from which they blow True
False

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Answer:

it is true because there is west,south and etc

What reactions are involved in making plastic bags and what are the molecules that make up a plastic bag like?

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Plastic bags are made up of plastic film, non-woven fabric, or plastic textile. The molecules that are present in plastic bags are polymers. Polymers are large molecules made up of repeating units called monomers.
I know this isn't much, but I hope it helps! :)

Muscle tissue is made up of cells that contract and release to produce movement. Which process provides the energy that the cells need to contract?A.respiration
B.meiosis
C.photosynthesis
D.mitosis

Answers

Answer:

The correct answer is A.respiration

Explanation:

Cellular respiration is a process which produces ATP (adenosine triphosphate) and methabolites. ATP is an "energy coin" which provides energy for biochemical processes in all cells. The other options are not correct: meiosis is the division process of sexual cells, mitosis is the division process of somatic cells and photosynthesis ocurrs in plant cells to obtain energy (not in animal cells of muscle tissue).

I think you mean miosis because mitosis is cell reproduction, photosynthesis is to do with light, respiration is breathing and meiosis is division of cells
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