Explanation

The science of chemical characteristics falls under the heading of analytical chemistry.

Analytical chemistry focuses on the study of the composition and structure of matter, which includes identifying and characterizing its chemical properties.

Explanation

The velocity of a photon is independent of its wavelength. 

The velocity of a photon is determined by the speed of light in a vacuum, which is a constant value (approximately 299,792,458 meters per second) and does not change based on the photon's wavelength or amplitude.

The speed of light is a fundamental constant of nature. 

Explanation

The condition where the male sexual cells develop earlier than female cells is called protandrous. 

Explanation

In 1-butyne, the hydrogen is attached to a carbon with a triple bond (sp hybridization), which makes it more acidic because the carbon can better stabilize the negative charge formed after losing the hydrogen ion.

Explanation

Explanation

Molecular crystals are generally soft and stable.

They are composed of molecules held together by relatively weak intermolecular forces, which results in them being easily deformed and having low melting points.

While they are generally stable under normal conditions, they can become unstable under extreme temperatures or pressures.

Explanation

Emission spectrum is produced when a substance emits light/radiation, showing specific wavelengths.

Explanation

 While an electron always has an electric field due to its charge, its spin generates a magnetic field.

The motion of a charged particle (even if it's just spinning) creates a magnetic field.

Explanation

 Gram-positive bacteria stain purple or blue with the Gram stain.

This is due to their thick peptidoglycan cell wall, which retains the primary stain (crystal violet) even after decolorization. 

Explanation

• When light passes through a prism, refraction occurs, leading to the formation of a spectrum.
• Refraction is the bending of light as it passes through a medium with a different optical density.
• It causes the different wavelengths of light to separate and form a spectrum.