Explanation

• The solute is the component of a solution that is dissolved in the solvent.
• It can be a solid, liquid, or gas, and it is typically present in a smaller amount than the solvent.
• Examples: sugar, salt, and coffee.

Explanation

• Crystallization is the process of separating a soluble solid from a solution by allowing the solution to cool and form crystals.
• This process is used to purify substances and obtain a solid in a pure form.

Explanation

• Bacteria on the surface of your skin are an example of a biotic component of the environment.
• Biotic components are living organisms, including plants, animals, fungi, and microorganisms like bacteria.

Explanation

• Apollo 11 was the mission that successfully landed astronauts.
• Neil Armstrong and Buzz Aldrin on the moon on July 20, 1969.

Explanation

• Sublimation is the process by which a solid substance transitions directly into a gas or vapour, without going through the liquid phase, and then condenses back into a solid.
• Examples include iodine, dry ice, and naphthalene.

Explanation

The incorrect statement is: Metals are dull and soft.

Metals are typically:

• Solid at room temperature
• Have high melting and boiling points
• Good conductors of heat and electricity
• Shiny (although some metals may have a dull appearance due to oxidation or other surface treatments)
• Ductile (can be drawn into thin wires or sheets)
• Malleable (can be pounded into shape without breaking)

Explanation

• Flowers are the reproductive structures of plants.
• It is responsible for producing seeds and facilitating sexual reproduction.
• They contain the male and female reproductive organs.
• They are essential for the production of fruits and seeds.

Explanation

A satellite is an object that orbits a larger celestial body, such as a planet or star.

Examples:

• Moons (natural satellites) that orbit planets
• Artificial satellites (like the International Space Station) that orbit Earth

Explanation

• When light hits a shiny surface, it bounces back without being absorbed or passing through the surface.
• This phenomenon is called reflection.
• The angle of incidence (the angle at which light hits the surface) is equal to the angle of reflection (the angle at which light bounces back).

Explanation

Gears can:

• Change speed: Gears can increase or decrease
• Change direction: Gears can change the direction of rotation
• Change force: Gears can increase or decrease the force

However, gears cannot change the fulcrum, which is the pivot point or axis of rotation.