The periodic table can be divided broadly into two types of elements, known as metals and nonmetals. Each of these elements has unique properties and can be found in a variety of things, including buildings, bridges, roads, electric cables, automobiles, mobile phones, laptop computers, and aircraft. These are found in both the oxygen we breathe and the carbon dioxide we expel. Metals and nonmetals are elements found in our environment. As a result, knowing whether an element is a metal or a nonmetal is critical.
Download Class 8 Chemistry Worksheet on Chapter 4 Materials: Metals and Non-Metals Set 1 PDF
CBSE Class 8 Chemistry Chapter 4 Materials: Metals and Non- Metals – Set 1
Q-1: Which of the following is not a characteristic of metals?
a) Can be drawn into wires
b) Generally hard
c) Produces stillness when dropped
d) Shiny appearance
Q-2: Which of the following statements is not correct?
a) Iron is a metal, and it reacts with water vigorously.
b) Reactions of non metals with base are complex.
c) Nonmetallic oxides are acidic and metallic oxides are basic.
d) Sodium metal cannot be kept in the open air.
Q-3: Which of the following metal/non metal is stored in the water?
a) Na
b) K
c) S
d) P
Q-4: In the table below, identify the metal or nonmetal present in them that forms oxides with oxygen, as well as the chemical formula of the acids and bases from their corresponding nonmetal or metal.
| S.No | Chemical Formula Of The Acid | Non Metal | Chemical Formula Of The Base | Metal |
| 1. | H3PO4 | Na2O | ||
| 2. | Carbon | Potassium | ||
| 3. | H2SO4 | NH4OH | ||
| 4. | HCl | Magnesium | ||
| 5. | Nitrogen | Fe2O3 |
Q-5: Fill in the blanks
a) The metal which is the best conductor of heat and electricity is _______.
b) Out of tin, lead, copper and mercury, the metals that lie above hydrogen in the activity series are _______ and _______.
c) The compounds in the form of which metals occur in nature are called ________.
d) When a copper vessel is exposed to moist air for an extended period of time, it develops a _________ green coating.
e) The _______ sound denotes the hydrogen gas presence.
Q-6: Write chemical equations for the reactions that occur,
i) When magnesium ribbon is burned in an oxygen-containing jar.
ii) Sodium metal falls into a water-filled sink.
iii) Steam is passed over hot aluminium.
Q-7: Which of the following oxides turns blue litmus solution red, and which turns red litmus solution blue?
NO2, MgO, P4O10, N2O5, CaO
Q-8: Which of the following metals is considered a strategic metal?
a) Sulphur
b) Magnesium
c) Chromium
d) Vanadium
Q-9: Which of the following can undergo a chemical reaction?
a) FeSO4+ Cu
b) MgSO4 + Pb
c) ZnSO4 + Fe
d) CuSO4 + Zn
Q-10: The metal M can be found in the form of oxide ore, and it is used in the construction of pipes and buildings. When exposed to moist air, this metal becomes covered with a red-brown substance. Identify the metal and give the oxide, M2O3, a name.
Q-11: Which of the following is not a characteristic of nonmetals?
a) Cannot be polished
b) Generally are soft
c) Cannot be easily broken
d) Low MP and BP
Q-12: Which of the following is the most abundant metal on earth’s crust?
a) Iron
b) Calcium
c) Magnesium
d) Aluminium
Q-13: A nonmetal A can be found in two forms: B and C. B is the hardest natural substance, whereas C is an excellent electrical conductor. Determine A, B, and C.
Q-14: By heating its sulphide in the presence of air, a metal that exists as a liquid at room temperature is obtained. Determine the metal and its ore. Give the reactions involved.
Q-15: Identify the following:
a) Two nonmetals with high melting and boiling points.
b) A nonmetal with lustre.
c) Two hard nonmetals.
Q-16: Materials such as rolled sulphur pieces and pencil lead do not exhibit malleability. Can we refer to these as metals?
Q-17: Can you safely hold a hot metallic pan that lacks a plastic or wooden handle?
Q-18: Which of the following nonmetals is used in the production of ointments and skin medicines?
a) Carbon
b) Sulphur
c) Nitrogen
d) Phosphorous
Q-19: Tensile strength of nonmetals is low. What does it imply?
Q-20: Piyush heated a small amount of powdered sulphur in a deflagrating spoon and collected the gas evolved in a gas jar with a lid.
(a) Name the gas that has evolved.
(b) How will Piyush determine the nature of the gas?
(c) Write down word equations of all the reactions taking place in this process.
Download the PDF to access answers to the Chemistry Worksheet for Class 8 Chemistry Chapter 4 Materials: Metals and Non-Metals Set -1.
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Read Also:
- Difference between Metals and Nonmetals
- Non Metals
- Properties of Metals and Non metals
- Chemical Properties of Metals
- Class 8 Materials Metals and Non-Metals Important Questions with Answers
- Chemistry Concept Questions and Answers
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