Explanation

Soaps are alkaline.

It often contain basic substances like sodium hydroxide, which can irritate or burn the eyes.

These bases disrupt the eye's natural pH, causing a stinging or burning sensation.

Explanation

Frogs typically have 26 chromosomes in their body cells.

The number of chromosomes is species-specific and helps in maintaining genetic stability.

Explanation

Chemical changes involve a transformation where new substances with different properties are created.

It often through reactions like combustion, rusting, or digestion.

Explanation

Escape velocity is the minimum speed a spacecraft needs to completely overcome Earth's gravitational pull without further propulsion.

For Earth, this velocity is approximately 11.2 km/s.

Explanation

Isobars are atoms of different elements that have the same mass number but different atomic numbers.

Example: Argon-40 and Calcium-40 both have mass number 40 but different atomic numbers.

Explanation

Oxygen has 8 protons and typically 8 neutrons, giving it a mass number of 16.

Mass number = Number of protons + Number of neutrons.

Explanation

Chlorofluorocarbons (CFCs) are chemical compounds that contain fluorine, carbon, and chlorine.

They were commonly used in refrigeration and air conditioning but are now regulated due to their role in ozone depletion.

Explanation

Neurons transmit messages through electrical impulses (action potentials) and chemical signals (neurotransmitters), forming an electrochemical wave.

These signals travel across the neurons and synapses to communicate information throughout the body.

Explanation

A solution is a homogeneous mixture where two or more substances are evenly distributed.

It consists of a solute (dissolved substance) and a solvent (the substance in which the solute dissolves).

Explanation

Rhizopus is a genus of mold that belongs to the kingdom Fungi.

It is commonly found on bread, fruits, and decaying organic matter.

It reproduces through spores.

It is known for its role in food spoilage and some industrial applications.