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Questions and Answers
Which level of organization is being discussed in the text?
Which level of organization is being discussed in the text?
- Cellular level
- Organ system level
- Tissue level
- Chemical level (correct)
What is a compound?
What is a compound?
- A substance composed of two or more elements joined by chemical bonds (correct)
- The smallest quantity of an element with unique properties
- An ongoing, close association between ions of opposite charge
- A pure substance that cannot be broken down by ordinary chemical means
What is an atom?
What is an atom?
- A pure substance that cannot be broken down by ordinary chemical means
- A substance composed of two or more elements joined by chemical bonds
- An ongoing, close association between ions of opposite charge
- The smallest quantity of an element with unique properties (correct)
What is an ionic bond?
What is an ionic bond?
What is a hydrogen bond?
What is a hydrogen bond?
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Study Notes
Atomic Structure
- The level of organization being discussed is the atomic level, which is the most basic unit of matter.
Chemical Compounds
- A compound is a substance that contains two or more different elements, chemically bonded together in a fixed ratio.
Atomic Structure
- An atom is the smallest unit of a chemical element that still maintains the properties of that element.
- Atoms are made up of protons, neutrons, and electrons.
- Protons and neutrons are found in the nucleus (center) of the atom, while electrons orbit around the nucleus.
Chemical Bonding
- An ionic bond is a type of chemical bond that forms between two atoms when one or more electrons are transferred from one atom to another, resulting in the formation of ions with opposite charges.
- Ionic bonds typically form between metal and non-metal atoms.
Intermolecular Forces
- A hydrogen bond is a type of intermolecular force that occurs when a hydrogen atom bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) forms a weak bond with another electronegative atom.
- Hydrogen bonds are relatively weak compared to ionic and covalent bonds, but are important in determining the structure and properties of molecules.
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