What Does The Term Electron Orbital Describe?
An electron orbital describes the orbit of an electron around the nucleus. … An electron orbital describes a three-dimensional space where an electron can be found 90% of the time.
What type of bond is joining the two hydrogen atoms two hydrogen atoms sharing a pair of electrons?
Which of the following bonds can form between atoms of equal electronegativity?
Which of the following bonds can form between atoms of equal electronegativity? Van der Waals interactions can form between atoms of equal electronegativity.
What happens when two separate atoms are brought together to form a chemical bond?
In ionic compounds electrons are transferred between atoms of different elements to form ions. … Atoms can also make chemical bonds by sharing electrons equally between each other. Such bonds are called covalent bonds.
Which statement is true about weak bonds is correct?
Which statement about weak bonds is correct? Weak bonds are transient and easily reversible. Molecules that form weak bonds can come together interact and then separate. The combined effect of many weak and transient hydrogen bonds or Van der Waals interactions can produce important emergent properties.
Which statement correctly describes hydrogen bonding?
Which statement correctly describes hydrogen bonds? They hold together adjacent water molecules. Which statement best describes why a water molecule is polar? Oxygen exerts a stronger pull on the shared electrons than the hydrogens do.
What happens when 2 hydrogen atoms bond?
When two hydrogen atoms come close enough to each other their electrons are attracted to the proton of the other atom. Because there is both a strong enough attraction betweeen atoms and room for electrons in the outer energy level of both atoms the atoms share electrons. This forms a covalent bond.
What is the arrow pointing to hydrogen ion?
What is the arrow pointing to? Hydrogen ion. The arrow is indicating a single proton a hydrogen ion (H+)
What is a weak bond?
Weak bonds are those forces of attraction that in biological situations do not take a large amount of energy to break. … In biological terms ionic bonds hydrogen bonds and van der Waals interactions are considered weak bonds.
Which property of water allows a paper towel to pick up a puddle of water?
Which property of water allows a paper towel to pick up a puddle of water? Adhesion of water molecules to other kinds of molecules. H2O adheres to the cellulose molecules in a paper towel.
Can atoms be divided or broken?
Atoms are the smallest possible unit of matter- they can’t be split apart or created or destroyed. We now know that this isn’t true at all- atoms are composed of smaller particles called protons neutrons and electrons.
Why do electrons form bonds?
Bonds are formed when valence electrons the electrons in the outermost electronic “shell” of an atom interact. The nature of the interaction between the atoms depends on their relative electronegativity. … The electrons are still shared between the atoms but the electrons are not equally attracted to both elements.
What do you call the attraction between the nucleus and?
A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is called a chemical bond….
What can happen to an electron when sunlight hits it?
What can happen to an electron when sunlight hits it? The electron will move out to a higher shell if the sunlight provides the correct discrete amount of energy. If the sunlight does not provide the correct amount of energy the electron will remain in its original shell.
Which example illustrates a property that emerges at the community level?
Which example illustrates a property that emerges at the community level? – Metabolic cooperation between prokaryotic cells forms a biofilm that allows bacterial colonies to transport nutrients and wastes. Biofilms may damage industrial equipment or cause tooth decay.
What is the term for an atom that is electrically charged?
Atoms that have net electric charges are called ions.
Positive ions are called cations and negative ions are called anions. Atoms have two types of charged particles: Protons have a positive charge and are found in the nucleus.
Which statement correctly describes the electrons in a water molecule?
Which statement correctly describes the electrons in a water molecule? Electrons are pulled closer to the oxygen atom. How does a catalyst influence a chemical reaction?
Which statement best describes why water is a polar molecule?
Water is a polar molecule because the bonds between oxygen and hydrogen are polar covalent bonds. This means that although they form covalent bonds (normally non-polar) the difference in electronegativity is great enough to make one side more negative (oxygen side) and the other side more positive (hydrogen side).
How will you describe substances with stronger intermolecular attractions?
The rule of thumb is that the stronger the intermolecular forces of attraction the more energy is required to break those forces. This translates into ionic and polar covalent compounds having higher boiling and melting points higher enthalpy of fusion and higher enthalpy of vaporization than covalent compounds.
Why do you think the H bonds only last a short time?
This is because of the tiny weak hydrogen bonds which in their billions hold water molecules together for small fractions of a second. … But because of the hydrogen bonds as water molecules come together they stick to one another for a small but significant amount of time.
Why do the atoms move apart?
An increase in the motion of the atoms competes with the attraction between atoms and causes them to move a little further apart. Cooling a solid decreases the motion of the atoms. A decrease in the motion of the atoms allows the attractions between atoms to bring them a little close together.
What is ionic in science?
Why did the sweat on Heathers forehead and arms form drops?
Why did the sweat on Heather’s forehead and arms form drops? When Heather grabbed the glass of ice water the ice cubes were floating at the top. … The density of water decreases when it freezes. You just studied 24 terms!
How does the way a buffer stabilizes pH?
How does the way a buffer stabilizes pH during addition of acid differ from the way the same buffer stabilizes pH during addition of base? It’s the same reaction running backward or forward. The same buffer can’t work for both acid and base. In one case it adds H+ in the other case it adds OH-.
What is the main sugar used by cells for energy quizlet?
An OH group from one component and an H atom from the other form a water molecule. What is the main sugar used by cells for energy? glucose. Cells use glucose for energy in the process of cell respiration.
Is water polar?
Water is a polar molecule. While the overall charge of the molecule is neutral the orientation of the two positively charged hydrogens (+1 each) at one end and the negatively charged oxygen (-2) at the other end give it two poles.
What are the 4 types of bonds?
Which is strongest bond?
Why does ice float in liquid water?
Believe it or not ice is actually about 9% less dense than water. Since the water is heavier it displaces the lighter ice causing the ice to float to the top.
Which answer best describes why does ice float in liquid water?
Why does ice float in liquid water? Ice floats in liquid water because its lower density as a solid than as a liquid. This is an important factor in the suitability of the environment for life. Also because hydrogen bonds keep the water molecules farther apart in ice making ice less dense.
What is addition and cohesion?
As for the definitions the tendency of two or more different molecules to bond with each other is known as Adhesion whereas the force of attraction between the same molecules is known as Cohesion. … When a glass surface is poured with water both adhesive and the cohesive forces act on the surface of the water.
Are new atoms created?
The short answer is yes atoms are being created all the time. … It’s called nuclear fusion and basically involves mashing protons and neutrons together to form new atoms– some hydrogen some helium some lithium etc all the way up to iron. Another way to make new atoms is through a supernova.
Can you split an atom with a knife?
A knife cannot cut anything smaller than the blade of a knife. Since knives are made out of atoms they can’t cut atoms. The splitting of atoms in atomic bombs happens as a result of a different process. … However even these atoms can’t be cut with a knife because the atoms are smaller than the knife is.
Are atoms invisible?
Atoms are really small. So small in fact that it’s impossible to see one with the naked eye even with the most powerful of microscopes. … Now a photograph shows a single atom floating in an electric field and it’s large enough to see without any kind of microscope. ? Science is badass.
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