Atoms are made up of three particles. They are the proton (which is the positively charged particle), electron (which is the negatively charged particle), and the neutron (which has no charge at all). Ions are just an atom that has lost or gained an electron. An atom is the most stable but only when it outer most layer is filled. Isotopes- are atoms of the same element but different number of neutrons.
At room temperature, fats are solids and oils are liquids. Fats are of animal origin, while oils tend to be found in plants. Waxes have a different structure (esters of fatty acids with long chain alcohols) and can be found in both animals and plants. Triglycerides These are made up of 3 fatty acid chains attached to a glycerol molecule. Fatty acids are chains of carbon atoms; the terminal one having an OOH group attached making a carboxylic group (COOH).
Dipole-dipole forces are permanent dipoles due to different electronegativity. Hydrogen bonding is a strong dipole that forms when H bonds to N, O, or F. [7] Nitric acid (HNO3) is a colorless, toxic, oxidizing, and corrosive liquid commonly used as laboratory reagent and for the manufacture of fertilizers and explosives. [8] It is completely miscible and has a dipole moment of 2.17D[2]. It contains one hydrogen bond and is a polar molecule. Water (H2O) is colorless liquid that’s the basis of life on Earth.
3. Arrhenius model: A model of acids and bases; states that an acid is a substance that contains hydrogen and ionizes to produce hydrogen ions in aqueous solution and a base is a substance that contains a hydroxide group and dissociates to produce a hydroxide ion in aqueous solution. 4. Bronsted-Lowry model: A model of acids and bases in which an acid is a hydrogen-ion donor and a base is a hydrogen ion acceptor. 5.
Alkanes composed of only carbon and hydrogen atoms are referred to as hydrocarbons. A hydrocarbon with the hydroxyl group is known as alcohol. The experiment was to determine and examine the structure of the alkanes and alcohols and the presence and relative strength of the two intermolecular forces. Intermolecular forces are the attractions that exist between atoms and molecules. The strength of the intermolecular forces of attraction determines whether a substance will be a solid, a liquid, or a gas.
4. Storage Lipids Pages: 346-358 Difficulty: 2 Ans: B Which of the following statements is true of lipids? A) Many contain fatty acids in ester or amide linkage. B) Most are simply polymers of isoprene. C) Testosterone is an important sphingolipid found in myelin.
How do different concentrations of enzyme affect the rate of yeast peroxidase activity? Background Information: Many organisms can demonstrate hydrogen peroxide (H₂O₂) enzymatically. Enzymes are globular proteins, responsible for most of the chemical activities of living organism (Masterman, David, and Kelly Redding). Enzymes catalyze thousands of chemical reactions that occur in living cells. In an enzyme-catalyst reaction, the substrate binds to the active site and forms an enzyme-substrate complete with the enzyme.
Atoms consist of a positively charged nucleus with negatively charged electrons surrounding it. An ion is an atom or group of, that have lost an electron or more, making it even more charged and more reactive. A molecule is a particle of two or more atoms held by chemical bonds. Its the smallest of units and exists independently. C. Define the term nutrient, and outline the main groups of nutrients.
As for, the positive charges are found in the protons while the negative charges are found in the electrons. That’s why; all atoms must have the same amount of protons and neutrons, to have a neutral combination between both positive and negative charges. A single unit of proton is known to have +1 elementary charge; as for a single unit of an electron has a -1 elementary charge. Take any random atom, it is known to have 5 protons and 7 neutrons; so it has a +5 (positive) elementary charge and a -7 (negative) elementary charge, overall it has a -2 (elementary charge) and that is a negative net charge from the resulting combination of the electrons and protons. Any atoms, which don’t have an equal amount of both protons and electrons, are all referred as ions.
Within the body, biological catalysts are vital to many processes and without them bodily reactions would be too slow to sustain life. The functions of these substances are both anabolic and catabolic. Some examples of catabolic enzymes are pepsin, a substance released in the stomach to degrade proteins and the many catalysts involved in cellular respiration, a bio-chemical pathway similar to photosynthesis. An example of an anabolic, enzyme-facilitated process would be the production of proteins, which involves catalysts shaping and assembling structures of amino acids. Catalysts are important not only to living