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HiSET Science Practice Test #2 2 Flashcards

6 cards from real HISET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 HiSET Science Practice Test #2 2 flashcards as text

  1. An atom of carbon-14 has 6 protons and 8 neutrons. What is the mass number of this atom?

    Answer: 14

    Mass number = number of protons + number of neutrons = 6 + 8 = 14. This is why this isotope is called carbon-14.

  2. Which process causes water to change from a liquid to a gas at temperatures below its boiling point?

    Answer: Evaporation

    Evaporation is the process by which liquid water becomes water vapor (gas) at the surface, even below the boiling point of 100°C, due to some molecules having enough energy to escape.

  3. In which type of reproduction does an organism produce offspring that are genetically identical to the parent?

    Answer: Asexual reproduction

    Asexual reproduction produces clones — offspring genetically identical to the single parent — because no fusion of egg and sperm occurs. Examples include budding, binary fission, and vegetative propagation.

  4. What happens to a gas inside a sealed container if the temperature is increased (assuming volume stays constant)?

    Answer: The pressure increases

    According to Gay-Lussac's Law, at constant volume, increasing temperature increases pressure. Higher temperature means faster-moving gas molecules that collide with container walls more forcefully.

  5. Which of the following is the correct order of taxonomic classification from broadest to most specific?

    Answer: Kingdom, Phylum, Class, Order, Family, Genus, Species

    The standard taxonomy hierarchy from broadest to most specific is: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. A mnemonic is 'Dear King Philip Came Over For Good Soup.'

  6. Which type of electromagnetic radiation has the shortest wavelength and highest energy?

    Answer: Gamma rays

    The electromagnetic spectrum from longest to shortest wavelength: radio, microwave, infrared, visible, ultraviolet, X-rays, gamma rays. Gamma rays have the shortest wavelength and carry the most energy.