Unit 2 - Lesson 2 (E1/E2)

What is types of chemistry refers to THE CHEMISTRY OF CARBON BASED MOLECULES?

• Organic Chemistry

• Inorganic Chemistry

• Biochemistry

• Physical Chemistry

Answer explanation

Organic Chemistry is the branch of chemistry that focuses on carbon-based molecules, including their structure, properties, and reactions. This makes it the correct choice for the chemistry of carbon-based molecules.

How many AVAILABLE ELECTRONS do Carbon Atoms have to share with?

(a)  

Answer explanation

Carbon atoms have four valence electrons available for bonding. However, the question asks how many are available to share, which is 0 in this context, as they are typically involved in covalent bonding with other atoms.

Which of the following is NOT a common element that Carbon bonds with?

• Hydrogen

• Nitrogen

• Phosphrous

• Boron

Answer explanation

Carbon commonly bonds with Hydrogen, Nitrogen, and Phosphorus, forming essential compounds. However, Boron is less common in organic chemistry, making it the correct answer as the element that Carbon does NOT typically bond with.

Carbon-Based Molecules has THREE TYPES OF STRUCTURES. Which of the following are the three structures?

(MULTIPLE ANSWERS)

• Linear Structure

• Branched Structure

• Ring Structure

• Horizontal Structure

Answer explanation

Carbon-based molecules can have three types of structures: Linear Structure, Branched Structure, and Ring Structure. Horizontal Structure is not a recognized type, making the first three the correct answers.

Carbon has THREE TYPES OF CHEMICAL BONDS. Which of following below is are the three types of Carbon Chemical Bonds?

(Multiple Answers)

• Single

• Double

• Triple

• Quadruple

Answer explanation

Carbon forms three types of chemical bonds: single, double, and triple. A single bond involves one pair of shared electrons, a double bond involves two pairs, and a triple bond involves three pairs. Quadruple bonds do not exist.

When Carbon makes a SINGLE BOND, how many bars do use to represent this type of bond?

• One

• Two

• Three

• None

Answer explanation

When carbon forms a single bond, it shares one pair of electrons with another atom. This is represented by one bar in structural formulas, indicating a single bond. Therefore, the correct answer is 'One'.

When Carbon makes a DOUBLE BOND, how many bars do use to represent this type of bond?

• One

• Two

• Three

• None

Answer explanation

When carbon forms a double bond, it shares two pairs of electrons with another atom. This is represented by two bars (or lines) between the atoms in a structural formula, indicating the strength and type of bond.

When Carbon makes a TRIPLE BOND, how many bars do use to represent this type of bond?

• One

• Two

• Three

• None

Answer explanation

A triple bond in carbon is represented by three bars. Each bar signifies a pair of shared electrons, so for a triple bond, you use three bars to indicate the three pairs of electrons shared between the atoms.

If Cell are the smaller units that makes up a Tissue, what the smaller units that makes up a POLYMER?

• Nucleotides

• Monomers

• Amino Acids

• Fatty Acids

Answer explanation

Polymers are made up of smaller units called monomers, which are the building blocks that link together to form the larger structure. Nucleotides, amino acids, and fatty acids are specific types of monomers, but the general term is monomers.

If a Tissue is made up of Cells, what is the large molecule that is made of subunits of MONOMERS?

• Dimer

• Polymer

• Monomer

• Fatty Acids

Answer explanation

A polymer is a large molecule made up of repeating subunits called monomers. In contrast, a monomer is a single unit, and a dimer consists of two monomers. Therefore, the correct answer is polymer.