Activity 1
Direction: Analyze each of the following statements whether it describes the property
of water. Write TRUE if the statement is correct but if it's false, change the underlined
word or group of words to make the whole statement true. Write your answer on a
separate sheet of paper.
.
1. Water has the highest cohesion on all non-metallic liquid.
2. Adhesion is shown once water droplets bead up on the surface of paper wax or
leaves.
3. The anomalous expansion of water is evident at 4°C where water further contracts
until freezes at 0°C.
4. The oxygen atom of water is covalently bonded with the two hydrogen atoms in a
water molecule.
5. As we raise the temperature of water this would mean we are increasing its average
kinetic energy.
6. The sticking of water molecules on the wall of a beaker would display adhesion.
7. The bond that holds each water molecule with the adjacent water molecule is a
hydrogen bond.
8. Substances that are polar and ready to be dissolved in water are called
hydrophobic.
9. The type of intermolecular force which is a polar covalent bond makes the water
polar and explains why water is a universal solvent.
10. High surface tension is the property of water that allows the lucky fishes to stay
on lakes where the water takes a lot of heat before it gets hot.
Now, use these facts on the properties of water in answering Activity 2.
Answers
Answer:
MARK MY ANSWER AS BRAINLIEST PLEASE
Explanation:
1. Water is highly cohesive—it is the highest of the non-metallic liquids.Water is sticky and clumps together into drops because of its cohesiveproperties, but chemistry and electricity are involved at a more detailed level to make this possible.
2.Adhesion is the attraction of molecules of one kind for molecules of a different kind, and it can be quite strong for water, especially with other molecules bearing positive or negative charges.
3.The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4o C to 0o C, and it becomes less dense. ... The density becomes less and less as it freezesbecause molecules of water normally form open crystal structures when in solid form.
4.A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen. Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds
5.Notice that as temperature increases, the range of kinetic energies increasesand the distribution curve “flattens out.” At a given temperature, the particles of any substance have the same average kinetic energy.
6.Adhesion is responsible for a meniscus and this has to do in part withwater's fairly high surface tension. Water molecules are attracted to the molecules in the wall of the glassbeaker. Cohesion is an intermolecular attraction between like molecules (otherwater molecules in this case).
7. The hydrogen bond in water is a dynamic attraction between neighboring water molecules involving one hydrogenatom located between the two oxygen atoms. Hydrogen bonding forms in liquidwater as the hydrogen atoms of onewater molecule are attracted towards the oxygen atom of a neighboring water molecule.
8. Functional groups are clusters of atoms with characteristic structure and functions. Polar molecules (with +/- charges) are attracted to watermolecules and are hydrophilic. Nonpolar molecules are repelled by water and do not dissolve in water; are hydrophobic.
9. Water molecules have a polararrangement of the oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge. This allows the water molecule to become attracted to many other different types of molecules.
10. The high surface tension of water is caused bystrong molecular interactions. The surface tension arises due to cohesive interactions between the molecules in the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each side.