The document summarizes key concepts in chemistry including the composition of matter, elements and atoms, electrons and electron configuration, compounds, chemical bonds, properties of water, solutions, and acids and bases. Matter is composed of elements which are made of atoms. Atoms consist of protons, neutrons, and electrons. Elements combine through chemical bonds to form compounds with unique properties. Water is an important solvent that forms hydrogen bonds and has unique physical properties. Solutions are uniform mixtures where one substance dissolves in another. The pH scale is used to measure acids and bases according to their hydrogen and hydroxide ion concentrations.
Organic compounds are almost 60% of all compounds. because of carbons tendency to form a compound as it has more than1 electron(4electrons) to form covallent compounds. SO a wide range of everything we eat is formed from carbon and hydrogen, which is the second important element to form organic compounds.
Organic compounds are almost 60% of all compounds. because of carbons tendency to form a compound as it has more than1 electron(4electrons) to form covallent compounds. SO a wide range of everything we eat is formed from carbon and hydrogen, which is the second important element to form organic compounds.
The attractive force which holds various constituents (atom, ions, etc.) together and stabilizes them by the overall loss of energy is known as chemical bonding. Therefore, it can be understood that chemical compounds are reliant on the strength of the chemical bonds between its constituents; The stronger the bonding between the constituents, the more stable the resulting compound would be.
The attractive force which holds various constituents (atom, ions, etc.) together and stabilizes them by the overall loss of energy is known as chemical bonding. Therefore, it can be understood that chemical compounds are reliant on the strength of the chemical bonds between its constituents; The stronger the bonding between the constituents, the more stable the resulting compound would be.
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7. Figure 2-3 The highlighted elements are the most abundant elements found in organisms Number of unpaired electrons = valence, also # of bonds that could be created.
15. Water Molecules and Hydrogen Bonding Water is polar. Hydrogen bonds form between water molecules. Electrons are pulled toward oxygen
16. Structure of Water: Liquid and Ice In ice, water molecules form a crystal lattice. In liquid water, no crystal lattice forms. Liquid water is denser than ice. As a result, ice floats.
17. Structure of Water: Liquid and Ice In liquid water, no crystal lattice forms.
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