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What is the definition of an element in chemistry?
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An element is a pure substance that cannot be broken down into simpler substances by chemical means and is made up of one type of atom.
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What is the chemical formula for sodium chloride?
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The chemical formula for sodium chloride is NaCl.
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What is an exothermic reaction?
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An exothermic reaction is a chemical reaction that releases energy in the form of heat or light.
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How can the Law of Conservation of Mass be summarized?
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The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction, it is conserved.
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What do protons determine in an atom?
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Protons determine the atomic number and identity of an element.
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What is kinetic energy?
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Kinetic energy is the energy that an object possesses due to its motion.
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What factors affect the gravitational force between two objects?
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The gravitational force between two objects is affected by their masses and the distance between them.
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State Ohm’s Law.
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Ohm’s Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, expressed as V = IR.
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What is acceleration defined as in physics?
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Acceleration is the rate of change of velocity of an object with respect to time.
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Define the term 'potential energy'.
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Potential energy is the energy that is stored in an object due to its position in a force field, such as gravitational or elastic potential energy.
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What are the basic building blocks of proteins?
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Amino acids are the basic building blocks of proteins.
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How do plant cells differ from animal cells?
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Plant cells have a cell wall and chloroplasts, whereas animal cells do not.
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What is photosynthesis?
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Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
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What organelle is responsible for energy production in cells?
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The mitochondrion is responsible for energy production in cells.
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Define 'ecology'.
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Ecology is the branch of biology that studies the interactions between organisms and their environment.
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What is DNA?
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DNA, or deoxyribonucleic acid, is the molecule that carries the genetic instructions for life.
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What role do enzymes play in the body?
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Enzymes act as catalysts to accelerate chemical reactions in the body.
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What are dominant and recessive alleles?
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Dominant alleles express their trait over recessive alleles, which only express if two copies are present.
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What is the function of the heart in the circulatory system?
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The heart pumps blood through the circulatory system, supplying oxygen and nutrients throughout the body.
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What does the term 'biodiversity' mean?
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Biodiversity refers to the variety of life in a particular habitat or ecosystem.
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