Chapter 2 videos

Question 1

What are covalent bonds?

Answer 1

A chemical bond that involves the sharing of electron pairs of atoms

Question 2

What are hydrogen bonds?

Answer 2

polar bonds that create water molecule

Question 3

What are ionic bonds?

Answer 3

Chemical bonds that have unpaired electrons move from one atom to another

Question 4

What is electronegativity? Also, what does it do?

Answer 4

The force pulls that atom uses to pull electrons to itself

Question 5

What is the electronegativity of C, H, O, N?

Answer 5

O has the strongest electronegativity, N has lower electronegativity than O, although more electronegativity than C&H, C&H have the same and lowest electronegativity

Question 6

What are valence electrons

Answer 6

are the electrons that are on the outer most valence shell that tend to form chemical bonds with other atoms

Question 7

What is the valence electrons of C, O, N, H?

Answer 7

C= 4
O=2
N=3
H=1

Question 8

What are the valence shells?

Answer 8

The valence shell is the outer most shell, that has the most energy and that unpaired electrons can pair with other electrons

Question 9

What are orbitals

Answer 9

Shared electrons on the outer most shell.

Question 10

What are polar bonds?

Answer 10

Bonds that DO NOT equally share atoms

Question 11

What are non-polar bonds?

Answer 11

Bonds that equally share atoms

Question 12

What is bond is the strongest

Answer 12

Covalent bonds are the strongest bonds, b

Question 13

Are ionic bonds comparable to covalent bonds why or why not?

Answer 13

Yes, when they are out of water, because once placed in water the bonds in the ionic bond weaken

Question 14

Which bond is considered the weakest bonds? & Why or why not?

Answer 14

The hydrogen bonds are the weakest, they are weaker because they are polar bonds that don’t share electrons evenly so, they can’t hold atoms together as strong

Question 15

What kind of molecules do hydrogen bond built?

Answer 15

Water molecules

Question 16

What kind of bond makes water

Answer 16

Hydrogen bonds

Question 17

What does cohesion property do?

Answer 17

It sticks to itself

Question 18

What does adhesion property do?

Answer 18

It sticks to other molecules

Question 19

Hydrophilic compounds are …?

Answer 19

water loving, and they dissolve in water

Question 20

Hydrophobic compound is… are?

Answer 20

NOT water loving and DON’T dissolve in water

Question 21

What is Ph? -

Answer 21

The concertation of hydrogen in a solution

Question 22

What does acid do to a solution

Answer 22

Acid adds protons to the solution

Question 23

What does basic do to a solution?

Answer 23

It removes access protons

Question 24

Why is O being the most electronegative element?

Answer 24

O has a 8 protons which is more than N, C, H protons, which the bonding attraction in O is greater than the others

Question 25

What are the levels of basic on the PH scale?

Answer 25

8-14

Question 26

What are the levels of acidic on the PH scale?

Answer 26

0-7 acidic

Question 27

what are the 5 acquired for all living things?

Answer 27

• Use one or more cells
• Products of evolution
• Capable of reproduction
• Store and process information
• Acquire and utility using energy

Question 28

Why isn’t oil soluble in water

Answer 28

Because water molecules can’t form hydrogen bonds with oils

Question 29

When losing electron, what kind of formation is it?

Answer 29

Cation formation

Question 30

When gaining electrons, what kind of formation is it?

Answer 30

Anion formation

Question 31

When losing electron, what kind charge would it have?

Answer 31

Positive charge

Question 32

When gaining electron, what kind charge would it have?

Answer 32

Negative

Question 33

Why is water such a good solvent?

Answer 33

It can make hydrogen bonds with any polar (partial charges) or charged molecule

Question 34

why are covalent bonds the strongest bonds

Answer 34

because the even sharing of electrons in the bonded atoms, anything with equally shared atoms there is no conflict of weaken the arrangement