Explanation

• An Addition Reaction is a type of chemical reaction where two or more substances combine to form a new, single compound.
• This type of reaction involves the formation of a new chemical bond, resulting in a single product with a unique identity.

Explanation

The statement "Total mass of the reactants and products will remain conserved during a chemical reaction" is called the Law of Conservation of Mass.

Explanation

• Conduction is the transfer of internal energy (heat) through direct contact between particles or molecules.
• Including collisions and movements of electrons within a substance.
• This process occurs in solids.

Explanation

• Isotopes of an element have the same atomic number (number of protons).
• It means they have the same chemical properties and are considered the same element.

Explanation

• A Periscope uses two plane mirrors placed at a 45° angle to each other.
• It allowing the user to see objects that are not in their direct line of sight.
• This is commonly used in submarines, tanks, and other applications where visibility is limited.

Explanation

• Mixtures are physical combinations of two or more substances that are not chemically combined.
• The components of a mixture retain their chemical properties and can be separated by physical means.

Explanation

• Iron filings are attracted to the magnetic field of a magnet.
• The magnetic field is strongest at the poles of the magnet.
• Therefore, the iron filings will be attracted more at the poles of the magnet, where the magnetic field is most intense.
• This is why you'll often see iron filings forming a pattern that traces out the magnetic field lines, with the filings clustering at the poles.

Explanation

• The Moon is illuminated because it reflects the light from the Sun.
• The Moon's surface reflects the sunlight, making it visible to us on Earth.

Explanation

• A nail cutter is an example of a Second-class lever.
• Where the load (the nail) is located between the effort (the hand) and the fulcrum (the pivot point of the cutter).

Explanation

Melting is the process by which a solid (in this case, ice) changes to a liquid (water) when it is heated and gains energy.