Q: What state occurs when the amount of solute dissolved exceeds the solubility? Choices: - polymerisation - density - alkalinity - supersaturation A:
supersaturation
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Q: Types of compounds include covalent and which other compounds? Choices: - reactant - soluble - solvent - ionic A:
ionic
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Q: What are electrons in the outer energy level of an atom called? Choices: - shell electrons - outer electrons - positive electrons - valence electrons A:
valence electrons
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Q: Flatworms have a concentration of nerve tissue in the head end, which was a major step in the evolution of what organ? Choices: - liver - heart - kidney - brain A:
brain
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