General Fundamental Scientific Principles 2

Question 1

Which law states that the total momentum of an isolated system remains constant?

Accepted Answer

Conservation of Momentum

Answer

Conservation of Momentum states that in the absence of external forces, total momentum of a system stays constant.

Question 2

What does the pH scale measure?

Accepted Answer

Acidity or alkalinity of a solution

Answer

The pH scale measures the hydrogen ion concentration, indicating how acidic (below 7) or alkaline (above 7) a solution is.

Question 3

In which process do plants convert light energy into chemical energy stored in glucose?

Accepted Answer

Photosynthesis

Answer

Photosynthesis uses sunlight, carbon dioxide, and water to produce glucose and oxygen in plant cells.

Question 4

What type of bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Answer

Covalent bonds form when two atoms share one or more pairs of electrons, as in water (H₂O).

Question 5

Which principle states that two objects cannot occupy the same quantum state simultaneously?

Accepted Answer

Pauli Exclusion Principle

Answer

The Pauli Exclusion Principle states no two fermions (like electrons) can have identical quantum numbers in the same atom.

General Practice Test