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Questions and Answers
What elements compose water?
What elements compose water?
- Oxygen and Hydrogen (correct)
- Oxygen and Nitrogen
- Carbon and Nitrogen
- Hydrogen and Carbon
What type of bond describes how atoms share electrons?
What type of bond describes how atoms share electrons?
Covalent bond
Oxygen shares electrons equally with hydrogen.
Oxygen shares electrons equally with hydrogen.
False (B)
What characteristic results from the unequal sharing of electrons in a water molecule?
What characteristic results from the unequal sharing of electrons in a water molecule?
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What is formed between two water molecules?
What is formed between two water molecules?
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What type of bond is formed between water molecules?
What type of bond is formed between water molecules?
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Water is non-polar.
Water is non-polar.
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What term describes different molecules forming hydrogen bonds with each other?
What term describes different molecules forming hydrogen bonds with each other?
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Study Notes
Properties of Water
- Water consists of two elements: Oxygen and Hydrogen in a 1:2 ratio.
- Formed through covalent bonds, where atoms share electrons.
Polarity of Water
- Oxygen shares electrons with Hydrogen, but not equally due to electronegativity; Oxygen has a stronger attraction to the shared electrons.
- This unequal sharing leads to polarity, creating a polar covalent bond within the water molecule.
- Polarity allows water to form hydrogen bonds with itself and other charged molecules.
Hydrogen Bonds
- Hydrogen bonds are weak attractions between water molecules or other charged entities.
- When two water molecules bond together, this is termed cohesion.
Cohesion and Adhesion
- Cohesion occurs between water molecules due to opposite charges attracting and forming hydrogen bonds.
- Adhesion is the bond formed between different molecules, such as an amino acid and water, highlighting the interaction of polar molecules.
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