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5 Written questions

5 Matching questions

  1. Mass number
  2. synthesis
  3. Oxidation number
  4. values
  5. coliform bacteria
  1. a # of electrons gained (-) or lost (+) in bonding
  2. b (E coli) these bacteria live in the digestive systems of animals, including humans-indicates the dumping of animal or human waste into the water or an overpopulation of animals in the area
  3. c Values are those things that really matter to each of us ... the ideas and beliefs we hold as special. Caring for others, for example, is a value; so is the freedom to express our opinions
  4. d 2 or more reactants combine to form one product
  5. e the number of protons plus neutrons in the nucleus of an atom

5 Multiple choice questions

  1. A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
  2. avoiding the causation of harm; the harm should not be disproportionate to the benefit of the treatment
  3. A positively charged particle located in the nucleus of an atom
  4. Because they are non-native, they have no natural enemies to control their numbers. They create a problem in the marsh because they eat the marsh grasses and dig up the roots. The roots keep the soil stable. When they are destroyed, the plant dies and the soil erodes away more easily.
  5. Salt and water
    Alcohal and water
    Copper culfate and water

5 True/False questions

  1. Suspension...

          

  2. Uses of radiation• to study living organisms, to diagnose and treat diseases, to sterilize medical instruments and food, to produce energy for heat and electric power, and to monitor various steps in all types of industrial processes.
    • Radiation is used and produced in nuclear reactors, which controls fission reactions to produce energy and new substances from the fission products
    • used by test personnel who monitor materials and processes by nondestructive methods such as x-rays

          

  3. Radioactive isotopes• The particles of matter in the air made radioactive from a nuclear explosion. Some of these particles fall in the immediate area and some get blown by upper winds many thousands of miles. Eventually they fall to the earth

          

  4. suspensionsmixture in which small particles of a substance are dispersed throughout a gas or liquid-are heterogeneous mixtures of a solid and a liquid in which the solid does not dissolve. Will settle when left standing undisturbed. Will show the tyndall effect

          

  5. Hypothesis2 or more reactants combine to form one product

          

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