This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Here are the solutions to your questions: 4. A Grade 7 teacher came to class carrying a deflagrating spoon in the laboratory? A deflagrating spoon is used to hold small amounts of substances, usually solids, for heating or burning in gases (e.g., burning sulfur in oxygen). 5. State two instruments used to measure length. a) Ruler* b) Measuring tape* Exercise 6 1. The picture below shows a crucible [image of mortar and pestle]. What is it used for? The apparatus shown is a mortar and pestle. It is used for grinding and crushing solid substances into powder. 2. State any three apparatus that are used for measuring volume. a) Measuring cylinder* b) Burette* c) Pipette* 3. The pictures below show two apparatus used for measuring [force/mass]. Identify them and state the use. a) Name: Spring balance* Use: Used to measure force or weight. b) Name: Beam balance* Uses: Used to measure mass. 4. The apparatus below is used to hold and support other apparatus like burettes doing experiments. It is known as Retort stand (or Clamp stand).