INTEGRATED SCIENCE ASSESSMENT TEST 1 J.H.S TWO (C.O.Y 2**)

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INTEGRATED SCIENCE ASSESSMENT TEST 1 J.H.S TWO (C.O.Y 2**)

  • November 2, 2020
  • Posted by: Charles Yeboah
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Welcome to your INTEGRATED SCIENCE ASSESSMENT TEST 1 J.H.S TWO (C.O.Y 2**)

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Class
ANSWER ALL QUESTIONS CAREFULLY(C.O.Y 2**)1. The chemical symbol for potassium is______.
2. An atom has 11 electrons and 12 neutrons. How many positively charged particles are in the atom?
3. Which of the following metals is a liquid at room temperature?
4. Gold is usually used to make jewellery because it is________.
5. An example of a semi-metal is_______.
6. Brass is an alloy of_______.
7. Which of the following is the vallency of Ca2+
8. Which of the following metals is in group 3 in the periodic table?
9. How many different elements are present in the compound CaO?
10. Which of the following metals is non-reactive?
SECTION B
1. Classify the following elements into metals, non-metals and semi-metals: hydrogen, helium, boron, zinc, mercury, silicon, oxygen,nitrogen, sodium.
2. Briefly describe how a Cation(positively charged atom) is formed and how an Anion(negatively charged atom) is also formed.
3. List the sub-atomic particles of an atom and show the electrical charges of each of the particles.
4. Distinguish between Element, Compound and Mixture

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