Explanation

Fats are typically solids at ordinary room temperature (around 20-25°C or 68-77°F).

However, they can melt and become liquids when heated to a higher temperature.

Explanation

A peptide is a molecule composed of two or more amino acids linked together through amide bonds.

It is a polyamide, meaning it is a polymer of amino acids.

Peptides are smaller than proteins, which are long chains of amino acids.

Explanation

Starch is a polysaccharide, a long chain of glucose molecules linked together through glycosidic bonds.

It is a complex carbohydrate that serves as a energy storage molecule in plants.

Explanation

Aldoses are carbohydrates that contain an aldehyde group (-CHO) in their molecular structure.

The aldehyde group is a functional group that contains a carbon-oxygen double bond and a hydrogen atom.

Examples of aldoses include glucose, galactose, and ribose.

Explanation

DNA (Deoxyribonucleic acid) is the primary molecule that encodes genetic information in cells.

It is a long, double-stranded helix made up of nucleotides, which are the building blocks of genetic information.

Explanation

CH3-CH2- is the ethyl radical.

The ethyl radical is a functional group derived from ethane (C2H6) by removing a hydrogen atom.

It leaving a highly reactive species with an unpaired electron.

Explanation

Alkenes are a class of unsaturated hydrocarbons that contain one or more carbon-carbon double bonds (C=C).

This double bond is the defining feature of alkenes.

It makes them more reactive than saturated hydrocarbons (alkanes).

Explanation

Acetic acid is the main component of vinegar.

It is a liquid made by fermenting the natural sugars found in fruits, grains, and other food sources.

Vinegar is typically made from apples, grapes, or other fruits, and it contains approximately 4-6% acetic acid by volume.

Explanation

Polyethene, also known as polyethylene, is a type of plastic.

It is a thermoplastic polymer made from ethylene monomers.

It is commonly used in packaging, plastic bags, and containers.

Explanation

The prefix "hept" stands for 7 carbon atoms.

This is a Greek prefix used in chemistry to denote the number of carbon atoms in a molecule.

Here are some examples:

• Hex- means 6
• Hept- means 7
• Oct- means 8
• Non- means 9
• Dec- means 10