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WASSCE 2022 LIKELY SCIENCE QUESTIONS
methods of checking leaching
💯 Give three difference between boiling point and melting point of a substance
💯 What is depletion of soil
💯Mention there soil nutrients suitable for plant growth
💯 Define castration and give two importance.
💯 Mention two areas where the compressible nature of gas applied
Send the answers in my dm ✍️✍️✍️✍️✍️
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I want to inform you that, this year too I will assist people writing Wassce exams. Papers will be available. This year will be miraculous as I am going to take the candidates through a series of strategic ways of passing the exams
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@CARTERBOSS
2 740
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✍️MY VIP IS OPEN FOR INTERESTED CANDIDATES,TEACHERS AND PARENTS ❗️❗️
✍️I PROVIDE DAILY QUESTIONS AND ANSWERS TO PREPARE STUDENTS WELL BEFORE THE EXAMS
✍️AFTER JOINING THE VIP (ORAL IS FREE)
VIP IS 100CEDIS
ALL LIKELY QUESTIONS ARE POSTED THERE✍️✍️✍️
✍️✍️YOUR MOCK WILL BE FREE
http://wa.me/+233573698349
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Tonight we will Commence our studies with Science 🧮 so get your Pens 🖊 and Jotters ready
7:45pm 🤝🤝👊
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We will End our Lesson for Today here
Please any questions can come in now🖊📖
Tomorrow Lesson will be Mathematics 🧮
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Thank y’all for a wonderful time.
NB: Never stop Beliving
@Beastexams
@CARTERBOSS
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@beastexams
Integrated science
1) i) What are enzymes.
(ii) Give three characteristics of enzymes.
(iii) State the end product of the digestion of the following foods;
(α) Carbohydrate,
(β) proteins
(γ) fats. 3marks
(b) (i) Define isotopes.
(ii) The elements Neon (Ne), with atomic number 10 has three
isotopes of mass number 17, 19 and 21. Determine the
number of neutrons present in each of the isotopes.
(c) Name the type of bonds present in each of the following substances;
(i) Ammonium chloride
(ii) Ethane
(iii) Carbon dioxide
(iv) Calcium Chloride
(d) Name three equipment used for harvesting fish from a pond.
2 (a) (i) What is meant by excretion?
(ii) Give two excretory Products of each of the following organs:
(α) Lungs
(β) kidney
(γ) skin. 3marks
(b) (i) State three main difference between ice and water.
(ii) Give two reasons why the melting of ice is considered as
a physical change.
(c) (i) State the major components of soil.
(ii) Give two farming practices which prevent soil erosion.
d) (i) Name the most appropriate instrument for taking each of the following
measurements:
(α) diameter of a wire of radius 1.8mm,
(β) Length of piece of wood 11.5cm long,
(γ) Internal diameter of a beaker of radius 3.32cm.
(ii) Name three devices whose operations depend on the effect
of pressure on fluids.
3 (a) (i) What is a backyard garden?
(ii) State three factors that should be considered when choosing
a site for garden.
(b) (i) What is temporary hardness of water?
(ii) Describe briefly how a mixture of granulated sugar and sand can be
separated.
(c) (i) Define the following types of motion and given one example of each.
(α) Linear motion
(β) Circular motion,
(γ) Random motion.
(d) (i) Explain briefly why air – craft and boats are constructed in
a stream line form.
(ii) Give three reasons for classifying organisms.
(iii) What is binomial system of nomenclature?
4 (a) (i) What is female genital mutilation?
(ii) Explain why female genital mutilation should be stopped.
(b) (i) What are convectional Currents?
(ii) Explain briefly why smoke from burning bush is spread
by moving air masses.
(c) (i) Explain the following statement:
(α) Pure water is neutral.
(β) A sodium hydroxide is an alkaline.
(ii) Give two uses of:
(α) acid – base indicators.
(β) sodium trioxocarbonate (IV).
(d) (i) What is brooding in poultry production?
(ii) Explain two methods of preserving eggs in poultry.
5 (a) (i) What is osmosis?
Explain how the root of a plant obtains energy.
EXAMINATION IS Starting NEXT MONTH , DO WELL TO PAY BEFORE IS TOO LATE.
(b) (i) What is an ester?
(ii) State one use of each of the following substances:
(α) hydrogen
(β) sodium hydroxide
(c) (i) Explain how earthquake comes about.
(ii) List three effects of earthquakes.
(d) State three types of erosion and how it can be prevented.
6 (a) (i) What is corrosion?
(ii) State two factors that can promote corrosion.
(b) (i) What is biotic factor?
(ii) Explain how three biotic factors are useful in forest habitat.
(c) (i) What is the center of gravity of a body?
(ii) Explain why a body balances at its center of gravity.
(d) (i) State why it is important to treat water.
(ii) Enumerate five methods of improving upon the quality of
water for domestic use.
(iii) Give four qualities of loam soil that makes it suitable
for crop production.
@Beastexams
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First, we calculate the mass of the sodium atoms, which is 22.98976 grams per mole. Next, we do the same for the mass of chlorine atoms, which is 35.453 grams per mole.
Then, we add these two masses together to find the total mass of sodium chloride molecules. This comes out to 58.44276 grams per mole which we can round to 58.44 grams per mole.
@beastexams
2 740
…….
The first thing we need is to find the individual atomic masses for each element. If you look at the entries for sodium and chlorine in the table, we will pay attention to the numbers that appear in the top left (see video). These represent the atomic mass. The element sodium has an atomic mass of 22.98976 g/mol. The element chlorine has an atomic mass of 35.453 g/mol.
Step 2: Count how many atoms there are for each element.
For the compound sodium chloride, since there are no subscripts (small numbers at the bottom of each element's symbol), that means there is only one sodium and only one chlorine atom for this compound.
Step 3: Find the molar mass
Now that we know how many atoms there are for each element, we can find the molar mass.
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How to Find the Molar Mass for Compounds.
Compounds are substances that are made up of more than one element. For example, some common compounds include salt, glucose, acetic acid (or vinegar), and sodium bicarbonate (or baking soda).
The compound sodium chloride is made up of two elements, namely, sodium and chlorine. Let's use this compound, sodium chloride, as our first example on how to calculate the molar mass for the compounds. The first thing we need to do is to find sodium and chlorine in the periodic table.
