Water

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Preguntas del test (10)

1Which end of a H2O molecule has a slight negative charge?
1. AOxygen end
2. BHydrogen end
2What kind of bond is formed when two water molecules are within close contact of one another?
1. AEster
2. BPhosphodiester
3. CHydrogen
4. DGlycosidic
3Cohesion is the sticking together of water molecules. It is not strong as the hydrogen bonds are very weak.
1. AVerdadero
2. BFalso
4Water attracts polar molecules.
1. AVerdadero
2. BFalso
5Water has....
1. AA low specific heat capacity
2. BA high latent heat of vaporisation
3. CA high surface tension
4. DA maximum density at 6 degrees
5. EHydrogen bonds
6Hydrogen bonds are formed when two water molecules are close together and their opposite charges attract each other. This weak attraction forms the hydrogen bond between the neighbouring molecules.
1. AVerdadero
2. BFalso
7At what temperature does water reach its maximum density?
1. A1 degrees
2. B3 degrees
3. C4 degrees
4. D5 degrees
5. E6 degrees
6. F8 degrees
8Which of the following are examples of where water is important in transport.
1. AIn the phloem
2. BIn the transpiration stream
3. CDuring active transport
4. DIn blood
5. EDuring digestion
9Surface tension allowed the surface film of the standing water to support aquatic insects.
1. AVerdadero
2. BFalso
10A small amount of heat energy is required for a rise in the temperature of water.
1. AVerdadero
2. BFalso

Descripción: AS Level (Lefelau A) LEFELAU A Test sobre Water, creado por Jozzii el 02/03/2015.
Autor: Jozzii
Idioma: English
Visitas: 25
Etiquetas: water by1 biology lefelau a lefelau a as level
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