General Science: Physics and Chemistry Concepts Flashcards
7 cards from real ASVAB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 General Science: Physics and Chemistry Concepts flashcards as text
Which type of wave requires a medium to travel through?
Answer: Sound wave
Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to propagate.
What happens to the boiling point of water when salt is dissolved in it?
Answer: It increases
Dissolving salt in water raises its boiling point through a colligative property called boiling point elevation.
A car accelerates from 0 to 60 mph in 6 seconds. What is its average acceleration?
Answer: 10 mph/s
Average acceleration = change in velocity / time = 60 mph ÷ 6 s = 10 mph/s.
Which subatomic particle has a negative charge?
Answer: Electron
Electrons carry a negative charge of −1, orbiting the nucleus of an atom.
What is the pH of a neutral solution at room temperature?
Answer: 7
A pH of 7 indicates neutrality, where the concentrations of H⁺ and OH⁻ ions are equal.
Which law states that energy cannot be created or destroyed, only converted?
Answer: First Law of Thermodynamics
The First Law of Thermodynamics (conservation of energy) states that total energy in a closed system remains constant.
What type of bond forms when two nonmetal atoms share electrons?
Answer: Covalent bond
Covalent bonds form when two nonmetal atoms share one or more pairs of electrons.