What causes water molecules to cling to plant cell walls?
Water adheres to the cellulose molecules in a paper towel, allowing the towel to pick up a puddle of water. This is similar to the adhesion between water molecules and cellulose in cell walls responsible for water transport in plants.
What name is given to the bond between water molecules quizlet?
Water exhibits several different properties due to its ability to form hydrogen bonds, including adhesion, cohesion, and surface tension. An example of adhesion is the hydrogen bonding between water and another type of molecule, such as the molecules composing the side of a water glass or beaker.
What is the tendency of an atom to pull electrons toward itself?
The tendency of an atom to pull electrons toward itself is referred to as its ELECTRONEGATIVITY.
Which statement must be mentioned in explaining why amphipathic molecules line up at a water surface?
Which statement must be mentioned in explaining why amphipathic molecules line up at a water surface? Polar groups repel water.
What causes cohesion in water?
Cohesion is the state of molecules being attracted to like molecules. Cohesion of water occurs due to the electronegativity of molecules and the strong bonds formed between hydrogen and oxygen atoms.
What is adhesion and cohesion?
Cohesion and adhesion are two water properties that describe how water molecules interact with each other. and how water molecules interact with other things like leaves or even you. Cohesion means that water likes to stick to itself. and adhesion means that water likes to stick to other things.
Which type of bond is responsible for water molecules sticking to other water molecules?
hydrogen bond The attraction between individual water molecules creates a bond known as a hydrogen bond.
Which type of bond between water molecules creates the surface tension of water?
hydrogen bonds Formed bonds are called hydrogen bonds which lead to strong cohesive forces between the water molecules and high surface tension of water.
What term is given to the ability of an elements atoms to attract electrons in a chemical bond?
Electronegativity Electronegativity is the tendency of an atom to attract electrons in a molecule.
What is called electronegativity?
Electronegativity is a measure of an atom's ability to attract shared electrons to itself. On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group.
What is another name for a condensation reaction?
A condensation reaction is also known as a dehydration reaction. This type of reaction forms an addition product and water in the presence of a catalyst or under acidic or basic conditions. The opposite of a condensation reaction is a hydrolysis reaction.
What type of reaction breaks a water molecule apart?
Hydrolysis Hydrolysis: a chemical reaction where water is used to break apart another molecule. (Brooker, 36) In a sense, water is wedging itself into a large molecule and breaking it down into two smaller molecules. During this process, water (H20) will break apart forming OH- and H+.
What is the process of cohesion?
Cohesion is the act, state, or process of sticking together of alike molecules or entities. An example is water molecules. The tendency of water molecules to stick together is referred to as cohesion and they are held together by a cohesive force such as an intermolecular hydrogen bond.
How does cohesion in plant occur?
In the case of xylem, adhesion occurs between water molecules and the molecules of the xylem cell walls. Cohesion, which is molecular attraction between “like” molecules. In water, cohesion occurs due to hydrogen bonding between water molecules.
What is cohesion and adhesion of water?
Cohesion and adhesion are two water properties that describe how water molecules interact with each other. and how water molecules interact with other things like leaves or even you. Cohesion means that water likes to stick to itself. and adhesion means that water likes to stick to other things.
What is cohesion and adhesion?
Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.
How does cohesion and adhesion work in plants?
Adhesion is the process of attaching one thing to another. For plants, adhesion allows for the water to stick to the organic tissues of plants. Cohesion keeps molecules of the same substance together. For plants, cohesion keeps the water molecules together.
Which type of bond between water molecules creates the surface tension of water quizlet?
Hydrogen bonding between water molecules gives water a high surface tension that provides enough resistance for light insects to walk across. Which component(s) of an atom participate in chemical bonding? A substance consisting of two or more different elements combined in a fixed ratio.
What is Electropositivity?
“Electropositivity can be defined as the tendency of an atom to donate electrons and form positively charged cations.” Electropositivity is primarily exhibited by metallic elements, especially the alkali metals and the alkaline earth metals.
What is Electropositivity and electronegativity?
Electropositive character means the tendency of an atom to lose e− and form a positive ion. Electronegativity of an element is the ability to attract the shared pair of e− in a molecule forwards itself.
How does electro negativity vary in a period and group How do you explain this variation?
On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.
What can you say of the electronegativity values of metals nonmetals and noble gases?
Electronegativities generally increase from left to right across a period. This is due to an increase in nuclear charge. alkali metal have the lowest electronegativities, while halogens have the highest. Because most noble gas do not form compounds, they do not have electronegativities.
What is a hydrolysis reaction?
Thus, a hydrolysis reaction is the cleavage of chemical bonds by the addition of water or a base that supplies the hydroxyl ion ( OH−). A chemical bond is cleaved, and two new bonds are formed, each one having either the hydrogen component (H) or the hydroxyl component (OH) of the water molecule.
Is condensation reaction the same as hydrolysis?
Main Difference – Condensation vs Hydrolysis Hydrolysis reactions occur through the formation of smaller molecules from a larger reactant molecule. Therefore, condensation involves the formation of a new chemical bond while hydrolysis involves the breakdown of a chemical bond.
What is hydrolysis process?
Usually hydrolysis is a chemical process in which a molecule of water is added to a substance. Sometimes this addition causes both the substance and water molecule to split into two parts. In such reactions, one fragment of the target molecule (or parent molecule) gains a hydrogen ion.
What is meant by hydrolysis?
Definition of hydrolysis : a chemical process of decomposition involving the splitting of a bond and the addition of the hydrogen cation and the hydroxide anion of water.
What is adhesion and cohesion in plants?
Adhesion and cohesion are important water properties that affects how water works everywhere, from plant leaves to your own body. Just remember… Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.
What causes cohesion of water?
Cohesion is the state of molecules being attracted to like molecules. Cohesion of water occurs due to the electronegativity of molecules and the strong bonds formed between hydrogen and oxygen atoms.
How is water pulled from the roots to the leaves?
Plant stems have some very special cells called xylem. These cells form long thin tubes that run from the roots up the stems to the leaves. Their job is to carry water upward from the roots to every part of a plant.
What is transpiration pull?
Transpiration pull or the suction force is the force which aids in drawing the water upward from roots to leaves. In leaves, some amount of water is used for photosynthesis and excess water is released into atmosphere through openings called as stomata.