Explanation

Sodium chloride (NaCl), commonly known as table salt.

It is the main salt dissolved in seawater.

Explanation

In heavier nuclei, the number of neutrons typically exceeds the number of protons to help stabilize the nucleus.

This is due to the need for additional strong nuclear force to counteract the electrostatic repulsion between positively charged protons.

Explanation

Fertilizers are substances added to soil to provide essential nutrients for plant growth, making up for any deficiencies in the soil.

Explanation

• The symbolic representation of a molecule of a compound is called a formula.
• It uses symbols and numbers to represent the composition of the molecule.
• For example, the formula for water is H₂O, indicating two hydrogen atoms and one oxygen atom.

Explanation

• Copper - 64 isotope is used to kill cancer cells.
• By a particular type of treatment, known as radiotherapy.

Explanation

• Distillation is a process that involves boiling the seawater and then collecting the condensed steam, which is free from salt and other impurities, resulting in fresh drinking water.
• This process is commonly used in desalination plants to produce drinking water from seawater.

Explanation

• Condensation is the process by which water vapor (gas) changes to liquid water, releasing energy in the form of heat.
• This occurs when warm air, containing water vapor, comes into contact with a cool surface.
• It causing the water vapor to condense into droplets of water.

Explanation

• Phenylamine, also known as aniline, is a molecule that consists of a benzene ring attached to an amino group (-NH2).
• In this molecule, one of the three p-orbitals on the nitrogen atom overlaps with the pi bonding system in the benzene ring, forming a delocalized pi system.

Explanation

Chemistry is the scientific study of the composition, properties, and reactions of matter. It deals with the analysis, synthesis, and transformation of matter, and explores the relationships between the properties of matter and its composition.

Chemistry is concerned with:

• Composition: The types and amounts of elements present in a substance.
• Properties: The characteristics of a substance, such as its color, melting point, boiling point, reactivity, and solubility.

Explanation

A carboxylic acid is produced after the acidic hydrolysis of esters and carboxylates are produced after the basic hydrolysis of an ester.