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5 Written questions

5 Matching questions

  1. Hydrogen bond
  2. Physical change
  3. Element
  4. Catalyst
  5. Matter
  1. a A collection of atoms that all have the same number of protons.
  2. b A substance that alters the speed of a chemical reaction but is not used up in the process.
  3. c A change that affects the appearance but not the chemical make-up of a substance.
  4. d Anything that has mass and takes up space.
  5. e A strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrogen) in specific molecules.

5 Multiple choice questions

  1. A membrane that allows some molecules to pass through but does not allow other molecules to pass through.
  2. Lacking any affinity to water.
  3. The process by which living organisms produce larger molecules from smaller ones.
  4. Carbohydrates that are made up of more than two monosaccharides.
  5. Breaking down complex molecules by the chemical addition of water.

5 True/False questions

  1. MonosaccharidesSimple carbohydrates that contain 3 to 10 carbon atoms.

          

  2. MoleculesChemicals that result from atoms linking together.

          

  3. Unsaturated fatA lipid made from fatty acids that have no double bonds between carbon atoms.

          

  4. Chemical changeA change that affects the appearance but not the chemical make-up of a substance.

          

  5. ConcentrationThe process by which living organisms produce larger molecules from smaller ones.