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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**)
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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ANSWER ALL QUESTIONS CAREFULLY(C.O.Y 2**)
1. The chemical symbol for potassium is______.
a. K
b. PO
c. Pb
2. An atom has 11 electrons and 12 neutrons. How many positively charged particles are in the atom?
a. 11
b. 12
c. 23
3. Which of the following metals is a liquid at room temperature?
a. Mercury
b. Sodium
c. Zinc
4. Gold is usually used to make jewellery because it is________.
a. less reactive with air
b. precious
c. expensive
5. An example of a semi-metal is_______.
a. silicon
b. calcium
c. sodium
6. Brass is an alloy of_______.
a. copper and zinc
b. iron and carbon
c. aluminium and zinc
7. Which of the following is the vallency of Ca2+
a. 2
b. 4
c. 3
8. Which of the following metals is in group 3 in the periodic table?
a. Aluminium
b. sodium
c. Zinc
9. How many different elements are present in the compound CaO?
a. 2
b. 3
c. 4
10. Which of the following metals is non-reactive?
a. Zinc
b. Sodium
c. Lithium
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
Time is Up!
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