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- Q1
What causes cohesion between water molecules?
Hydrogen bonds between adjacent water molecules.
Hydrogen ions attract oxygen ions.
Covalent bonds between hydrogen and oxygen in a water molecule.
Water molecules form covalent bonds between each other.
60s - Q2
Water is a _____ molecule; the oxygen atom is slightly negative and _____ slightly positive due to the _____ sharing of the electrons between hydrogen and _____. These small _____ charges each other forming _____ bonds. This largely accounts for the unique _____ of water that make it an ideal liquid to _____ life.
Properties caused by polarity include _____, adhesion, solvent properties, high _____ and high heat of _____.
Users re-arrange answers into correct orderJumble300s - Q3
Water is an evaporative coolant that allows organisms to lose heat by evaporating. Which of the following organs does not lose heat in this manner?
Horse's lung
Dog's tongue
Plant leaf
Human brain
60s - Q4
Which kind of bonds can form between water molecules?
Peptide
Ionic
Covalent
Hydrogen
60s - Q5
In a water molecule, what is meant by the 'positive pole'?
The area containing no electrons near its oxygen atom nuclei
The area containing more electrons near its hydrogen atom nuclei
The area containing fewer electrons near its hydrogen atom nuclei
The area containing fewer electrons near its oxygen atom nuclei
60s - Q6
In a water molecule, what is the area containing more electrons around the oxygen atom known as?
Negative pole
Positive nucleus
Ionic territory
Synaptic cleft
60s - Q7
A hydrogen bond is a _____ bond formed between the positive and negative _____ of adjacent water molecules.
weak, poles
covalent, poles
covalent, atoms
strong, poles
60s - Q8
Water is a good substance for the transport of molecules in living things as it can easily _____ a wide range of _____ molecules. It also has low _____ which allows aqueous solutions to travel through vessels.
dissolve, hydrophilic, viscosity
60s - Q9
Which of the following statements relates to the cohesive property of water molecules that has importance to animals living in ponds and in transport of water in the xylem of plants?
H-bonds make water molecules stick to each other.
Ions within water molecules attract each other, creating a strong bond.
Covalent bonds allow water molecules to stick to each other.
Hydrogen atoms allow ionic bonds to form.
60s - Q10
Which of the following molecules are readily soluble in water?
Glucose, some amino acids and ionic salts.
Steroids, Fatty acids and glycerol.
Lipids and carbohydrates.
Ionic salts and polysaccharides
60s - Q11
Which property of water helps to keep lakes at relatively stable temperatures?
It is transparent.
It is adhesive and cohesive.
It has a high specific heat capacity.
It has a high melting point.
60s - Q12
Some medicines are designed to dissolve in a glass of water. What is the term used to describe polar molecules which are easily soluble in water?
Hydrostatic
Osmotic
Hydrophilic
Hydrophobic
60s - Q13
Why, in the search for extraterrestrial life on distant planets, why is the Goldilocks zone an important consideration?
Planets in this zone have oxygen in the atmosphere.
Planets in this zone provide a suitable environment for growth of Arena sativa.
Planets in this zone have the correct temperature for water to be liquid.
Planets in this zone provide a suitable environment for Ursus arctus.
60s
