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Question
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Answer
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What is the green pigment found in chloroplasts called?
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Chlorophyll
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What enzyme protects cells by breaking down hydrogen peroxide into water and oxygen?
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Catalase
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Which two products are made during anaerobic respiration in yeast?
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Ethanol and Carbon Dioxide
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What colour does the hydrogen carbonate indicator turn when there is a lack of carbon dioxide present?
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Purple
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What is the name of the cell packed full of chloroplasts for photosynthesis?
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Palisade cell
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Which of seven main systems in the human body has glands that secretes hormones (chemical messengers)?
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Endocrine
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What is the net movement of particles from a high concentration to a region of low concentration due to kinetic energy called?
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Diffusion
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What is the specific name of the rapid increase in numbers of algal cells in an aquatic habitat, often caused by eutrophication?
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Algal bloom
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What is the name of the cell that has the ability to divide many times by mitosis while remaining undifferentiated?
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Stem cell
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What is the negatively charged particle found in energy levels surrounding the nucleus inside atoms called?
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Electron
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What is the specific name of atoms with the same number of protons but a different number of neutrons called?
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Isotopes
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Find the relative atomic mass of chlorine which is found to contain 75% of atoms with a mass number of 32 and 25% of atoms with a mass number of 36
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33
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What is the specific name of a molecule that contains 2 atoms?
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Diatomic molecule
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How are alkali metals stored to stop them reacting with water and oxygen? (because they are very reactive)
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In oil
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What is the specific name of a substance that speeds up a chemical reaction but is not used up?
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Catalyst
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What is the appearance of iodine at room temperature? (two words)
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Grey solid
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What is the specific name of a substance that dissolves in a solvent?
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Solute
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What method of separation is used for soluble solids dissolved in a solvent?
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Chromatography
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What is the specific name of the solid left on the filter paper during filtration?
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Residue
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Hydroelectric power stations generate about 2% of Britain's electricity but they generate roughly how much of the world's electricity? (%)
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10
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What is the specific term that is defined as the rate at which energy is transferred or the rate at which work is done?
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Power
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What is the name of the energy resource that will never run out? They are replenished as they are used.
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Renewable
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What is the specific term of the amount of energy required to raise the temperature of one kilogram of a substance by one degree Celsius? (3 words)
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Specific heat capacity
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A car has a kinetic energy store of 50000 J. It is travelling at a speed of 10m/s. Calculate the mass of the car
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1000 kg
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Which product of burning coal contributes to acid rain formation?
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Sulfur dioxide
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What is the correct unit for measuring power?
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Watts
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Modern house are built with two layers of brick. In between the brick layers is cavity wall insulation. What is the type of foam that insulates the wall here?
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Polystyrene
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How many joules (J) in 1 megajoule (MJ)?
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1000000
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