Answer:
A
Explanation:
An element is a substance that cannot be broken down into simpler substances using ordinary chemical procedures. To disintegrate an element, procedures like nuclear reactions needed to be used.
In fact, it was thought of that the elements are indivisible during the days of Dalton, but advances in science and technology has shown that these elements could be broken down albeit not easily
An element is a substance that cannot be broken down into other substances by ordinary chemical methods. It is the basic unit of all matter. Examples of elements include gold, silver, and carbon.
A substance that cannot be broken down into other substances by ordinary chemical methods is called an element. This is because elements are the fundamental materials of which all matter is composed. For instance, gold, silver, and carbon are examples of elements. Unlike compounds, isotopes or molecules, an element is made up of the same type of atom and cannot be decomposed into simpler substances by any ordinary chemical processes.
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B. False
Answer:
False
Explanation:
Because if Kelvin temperature gas is doubled, the pressure would not change
Answer:
The correct answer is A) carbon-carbon bonds.
Explanation:
The noncovalent interactions can generally be classified into electrostatic, π interactions, Van der Waals forces, and hydrophobic interactions. They do not share electrons, but present more dispersed variations of electromagnetic interactions between molecules or within the same molecule.
In a carbon-carbon bond, there is a covalent bond between two atoms in an organic compound. The most common form is the simple bond, which is composed of two electrons, one belonging to each of the two atoms. The simple carbon-carbon bond is a sigma bond.
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Answer:
The correct option is A
Explanation:
Non-covalent interactions, from the name, means interactions that do not involve covalent interaction. Covalent interaction involves the sharing of electrons between two atoms. The bond between two carbons in organic compounds is covalent bond. The covalent interaction in itself does not permit for three-dimensional structure. Examples of noncovalent interaction include hydrogen bonds, ionic interactions, van der waals interactions and hydrogen bonds
Answer:
This process is considered as a cycle because it continues and dosent stops. This process includes the evaporation of watet from earth surface due to heat.this water is converted in to water vapours. After reaching clouds it condences back. When the clouds become heavy with watef it falls back on earth as rain.and the process repeats.
Explanation:
The element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p² is silicon (Si).
In the electron configuration notation, each number and letter represents a specific energy level (or shell) and subshell that contains electrons in an atom. The numbers indicate the energy levels (principal quantum numbers), and the letters represent the type of subshell (s, p, d, or f).
Let's break down the electron configuration for silicon (Si):
1s²: This indicates that the first energy level (n = 1) has two electrons in the s subshell.
2s²: This indicates that the second energy level (n = 2) has two electrons in the s subshell.
2p⁶: This indicates that the second energy level (n = 2) has six electrons in the p subshell.
3s²: This indicates that the third energy level (n = 3) has two electrons in the s subshell.
3p²: This indicates that the third energy level (n = 3) has two electrons in the p subshell.
To find the element with this electron configuration, we count the total number of electrons: 2 + 2 + 6 + 2 + 2 = 14 electrons. Since silicon (Si) has 14 electrons, it matches the given electron configuration.
Silicon is a chemical element in the periodic table with atomic number 14. It is a metalloid, meaning it has properties of both metals and nonmetals. Silicon is widely used in various industries, including electronics, as it is a key component of semiconductors and is crucial for modern technology.
To learn more about electron configuration, here
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squirrels that bury nuts in the ground
B.
fungi that decompose the remains of dead trees
C.
flowers that turn to follow the sun as it moves across the sky
D.
bees that help spread pollen from one plant to another
Answer: D. bees that help spread pollen from one plant to another
Explanation: i took the k12 test and passed :)