Answer: Electrons
Explanation: In chemical reactions, elements and compounds change in order to form different substances. This changes can be:
1. oxidation state: which is define as the charge of the atom
2. bonding: atoms in a compound are bonded, this bonds can break so atoms rearrange to form different substances
In this changes electrons are involve. The charge depends on the amount of negative charge of electron respect to positive charge of proton in nucleus which remain the same, otherwise we would be talking about nuclear reactions.
Also, bonding depends on the electrons that atoms can give, receive or share to form ionic or covalent bonds.
D. 6 electrons
A single nitrogen atom has five electrons in its outer energy level to start, and will be most stable with an octet, or 8 electrons in its outer level.
B. H3O+ ions as the only positive ions in solution
C. OH– ions as the only negative ions in solution
D. H– ions as the only negative ions in solution
Answer : The correct option is, (C) ions as the only negative ions in solution
Explanation :
According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion and a bases is a substance that ionizes in the water to give hydroxide ion .
A sample of is considered to be an Arrhenius base because when it dissolves in the water to yield ions as the only negative ions in solution.
Hence, the correct option is, (C)
A phospholipid is composed of a polar, hydrophilic phosphate group 'head' and two hydrophobic (non-polar) fatty acid tails, where one tail is unsaturated (meaning it has a double bond between carbons, leading to a kinked shape).
Phospholipids are amphipathic molecules consisting of a hydrophilic (water-attracting) head group that contains a phosphate and is attached to a glycerol molecule and a hydrophobic (water-repelling) tail that contains two fatty acid chains. This structure permits different interactions based on charge and is crucial in forming biological membranes.
A phospholipid is an amphipathic molecule, or a molecule with both hydrophilic and hydrophobic components. This structure consists of a hydrophilic phosphatase-containing group (the head), and two hydrophobic fatty acid chains (the tails). The hydrophilic head group is typically made up of a phosphate group attached to a glycerol molecule. The hydrophobic tails are generally long hydrocarbon chains comprising of either saturated or unsaturated fatty acids.
This pattern allows for the dual-loving character of the phospholipid to interact differently with substances based on their charges and allows phospholipids to play a crucial role in the formation of biological membranes such as the plasma membrane.
#SPJ11