Science up to unit eight

    Master this deck with 28 terms through effective study methods.

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    What is photosynthesis?

    Plants convert CO₂ and H₂O into glucose using sunlight.

    What are the main products of photosynthesis?

    Glucose and oxygen are produced.

    How does light intensity affect photosynthesis?

    Increased light boosts the rate until a limit is reached.

    What happens to photosynthesis if CO₂ levels drop?

    The rate of photosynthesis decreases.

    What is the role of temperature in photosynthesis?

    Enzymes control the process and can denature at high temperatures.

    What is the carbon cycle?

    It describes how carbon moves between organisms and the environment.

    How do plants contribute to the carbon cycle?

    They absorb CO₂ during photosynthesis and release it during respiration.

    What is the greenhouse effect?

    Greenhouse gases trap heat in the atmosphere.

    What are some effects of climate change?

    Rising temperatures and extreme weather events occur.

    What are the three main subatomic particles in an atom?

    Protons, neutrons, and electrons.

    What does the atomic number represent?

    The number of protons in an atom's nucleus.

    How are elements organized in the periodic table?

    By atomic number and grouped by similar properties.

    What is ionic bonding?

    Electrons are transferred between atoms.

    What distinguishes simple molecular structures from giant structures?

    Simple structures have low melting points and weak forces.

    What does density measure?

    The mass of an object per unit volume.

    How does heat differ from temperature?

    Heat is energy transfer, while temperature measures thermal energy.

    What does the law of conservation of energy state?

    Energy cannot be created or destroyed, only transformed.

    What is thermal equilibrium?

    The state when two objects reach the same temperature.

    What is conduction?

    Heat transfer through solids by particle vibration.

    What happens during evaporation?

    High-energy particles escape, cooling the remaining liquid.

    What is DNA?

    The molecule that carries genetic information.

    What are gametes?

    Reproductive cells containing half the number of chromosomes.

    What is variation in biology?

    Differences between individuals of the same species.

    What is natural selection?

    The process where better-adapted organisms survive and reproduce.

    What measures the rate of reaction?

    Volume of gas produced or mass lost over time.

    How does surface area affect reaction rate?

    Smaller pieces expose more particles, increasing collisions.

    What effect does temperature have on reaction rates?

    Higher temperatures increase particle movement and collisions.

    How does concentration influence reaction rates?

    Higher concentration leads to more collisions between particles.