Water Chemistry
What atoms make up a water molecule?
2 Hydrogen and 1 Oxygen
What type of bond is responsible for the properties of water?
Hydrogen bond
Describe cohesion.
water molecules sticking to other water molecules.
water molecules forming hydrogen bonds with other water molecules.
What property/properties of water were involved in getting two glass slides to stick to each other?
Cohesion and Adhesion
Which part of a water molecule has a slight negative charge?
The Oxygen
Hydrogen bonds form ______________ water molecules.
between
Describe adhesion.
Water molecules sticking to other polar molecules.
Water molecules forming hydrogen bonds with other polar molecules.
What does Hydrophobic mean?
Dislikes, fears, or repels water
Which part of a water molecule has a slight positive charge?
The Hydrogen
Covalent bonds form _______________ water molecules.
within
What is surface tension?
The amount of force needed to stretch or break the surface of a liquid.
What does Hydrophilic mean?
Likes or attracted to water
True or False
Water is a non-polar molecule.
False
What is a term used to describe bonds that from BETWEEN molecules.
Intermolecular bonds
Why is water referred to as a universal solvent?
Because water can dissolve many different polar substances.
Why do oil and water not mix?
Why is water called a polar molecule?
Because water has a charge (slight positive and slight negative ends)
What is a term used to describe bonds that form WITHIN a molceule.
Intramolecular bond
Which property of water refers to the amount of energy (heat) needed to change waters temperature?
High specific heat
How does waters high specific heat help to stabilize temperatures (internally or environmentally)?
Waters high specific heat removes a lot of energy from a humans body as sweat evaporates off of their skin.
Large bodies of water are able to absorb heat slowly during the day (cool coastal areas) and release heat slowly at night (warm coastal areas).