BIOL 1020 Lecture Notes - Lecture 2: Partial Charge, Solution, Chemical Polarity

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azureminnow712

12 Sep 2018

School

University of Manitoba

Department

Biological Sciences

Course

BIOL 1020

Professor

Jason R. Treberg

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BIOL 1020 Lecture Notes - Lecture 2: Partial Charge, Solution, Chemical Polarity

Document Summary

Water and life and the chemistry of life. Everything is made up of chemical that is we as living things are bunch of chemicals. There are so many chemical bonds but in this course w focus on three which are as follows: covalent bond - a very strong bond, ionic bond - intermediate in strength, hydrogen bond weakest bond. This is the sharing of electrons between two or more elements and there are different types of covalent bonds as follows; Single covalent bond: it requires sharing a pair of electron. Double covalent bond: requires double bond sharing two pairs of electrons. Electronegativity: this is an atom attraction for shared electron. The more electronegative the more strongly it pulls electron to itself and vice versa. Covalent bonds can be polar and non polar. The polar covalent bond has different electronegativity hence polar and the nonpolar covalent bond have the same negativity.

Related Questions

1. Compounds that are made of carbon, hydrogen, oxygen, nitrogenand/or sulfur are:

a. ionic compounds

b. molecular compounds

2. A peptide bond is a...

a. covalent bond

b. intermolecular force

3. In chemistry, what is an R group?

a. a real group

b. a free radical

c. Argon

d. a functional group

4. A hydrogen bond is a type of

a. dispersion force

b. dipole-dipole force

c. covalent bond

d. ion-dipole force

5. In general chemistry, what do weak acids do?

a. accept a proton

b. donate a proton

6. In general chemistry, what do weak bases do?

a. accept a proton

b. donate a proton

7. What happens to a weak acid when it donates a proton?

a. it becomes positively charged

b. it becomes negatively charged

c. it become neutral

8. what happens to a weak base when it accepts a proton?

a. it becomes positvely charged

b. it becomes negatively charged

c. it becomes neutral

9. R groups that cluster in the center of proteins or are foundadjacent to the hydrocarbon chains of membrane phospholipids tendto have R groups with alkyl groups, such as (âCH₃) or(âCH₂âCH₃). Using your General Chemistryknowledge, what bond, force or interaction would form between thesegroups?

a. chemical bond

b. hydrogen bond

c. van der waals interaction

d. covalent bond

10. A amino acid has an R group containing an amide group(âCONH₂), and another amino acid has an R groupcontaining a hydroxyl group (âOH). Using your General Chemistryknowledge, what bond or force would form between these groups?

a. chemical bond

b. hydrogen bond

c. van der waals interaction

d. covalent bond

tansea-lion662

Fill in the following chart with the appropriate subatomic particle and state whether each is located in the nucleus of the orbital

Particle	Charge	Location (Nucleus or Orbital)
	Positive (+)
	Negative (-)
	Neutral Charge

Fill in the following chart using the lowercase letter of the statements below. Please be aware that some letters should be used more than once because they are true for more than one type of bond.

Covalent Bonds	Ionic Bonds	Hydrogen Bonds

Electrons are transferred from one atom to another atom

Valance electrons are shared between atoms

Involves positive and negative ions

A weak bond between 2 or more polar molecules

A bond between 2 or more atoms

The type of bond used to make NaCl (table salt)

The type of bond used to make CH₄ (Methane)

What does it mean when a molecule is described as âpolar?â Be detailed in your answer.

State and explain two reasons that water molecules are essential to life because of their hydrogen bonds.

Fill in the chart with the missing information about macromolecules

Macromolecule	Dietary source	Function	Example	Defining Characteristics
Carbohydrate			Cellulose and glucose
Lipid	Fats, Oils
Protein
Nucleic Acid	Sardines, beans, spinach			Made of nucleotides (contain a base, sugar and phosphate)

greydinosaur410

ATOMIC STRUCTURE

1. A neutral oxygen atom (atomic number = 8) has 8 electronslocated in 2 different electron orbitals. TrueFalse

2. Hydrogen has only one neutron and no protons in itsnucleus. TrueFalse
3. An atom consists of a central nucleus surrounded by electronsthat are in constant motion. TrueFalse
4. Almost all of the mass of an atom is concentrated in itselectrons. TrueFalse
5. The orbital of an electron is the volume of space where theelectron is most likely to be found. TrueFalse
6. Almost all of the volume of an atom is emptyspace. TrueFalse
7. The reactivity or chemical behavior of an atom depends primarilyon the number of neutrons it has. TrueFalse
8. Modern physics indicates that we cannot determine the exactlocation of a particular electron at any giventime. TrueFalse
9. Electrons are maintained in their orbitals by their attractionto the positively charged nucleus. TrueFalse
10. Atomic orbitals represent probability distributions forelectrons and come in a variety of shapes. TrueFalse

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BIOL 1020 Lecture Notes - Lecture 2: Partial Charge, Solution, Chemical Polarity

BIOL 1020 Lecture Notes - Lecture 2: Partial Charge, Solution, Chemical Polarity

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