All elements found on Earth have been properly arranged in a periodic table based on their increasing atomic numbers. Based on their physical and chemical properties, these elements are divided into three groups: metalloids, metals, and non-metals.
Metals are elements that donate electrons to form bonds in order to form electropositive ions. Metals are classified into three groups in the periodic table: alkali metals, alkaline earth metals, and transition metals. The element loses one, two, or more electrons to form positive ions, depending on the group in which it is found.
Non-metals are elements with partially filled electron shells in their outermost shell. These elements tend to attract electrons from neighbouring atoms and form anions due to the presence of a large number of valence electrons. Nonmetals are thus electronegative elements.
Download PDF of Class 10 Chemistry Worksheet Chapter 3 Metals and Non-metals – Set 3
CBSE Class 10 Chemistry Worksheet Chapter 3 Metals and Non-metals – Set 3
Q1. Which of the following is the correct arrangement of the given metals in ascending order of their reactivity?
Zinc, Iron, Magnesium, Sodium
a.) Zinc > Iron > Magnesium > Sodium
b.) Sodium > Magnesium > Iron > Zinc
c.) Sodium > Zinc > Magnesium > Iron
d.) Sodium > Magnesium > Zinc > Iron
Q2. Which of the following metals forms a protective layer on oxidation?
a.) Mg
b.) Na
c.) Al
d.) Fe
Q3. Solder is an alloy of:
a.) lead and tin
b.) copper and tin
c.) zinc and lead
d.) mercury and other metals
Q4. Which of the following non-metal is a good conductor of electricity?
a.) Chlorine
b.) Graphite
c.) Sulphur
d.) Phosphorus
Q5. Which of the following gases burns with a pop sound?
a.) Oxygen
b.) Carbon dioxide
c.) Hydrogen
d.) All of the above
Q6. What type of oxides are formed when non-metals combine with oxygen?
Q7. What is aqua regia? Name two special metals which are insoluble in common reagents but dissolve in aqua regia?
Q8. Which gas is liberated when a metal reacts with an acid? How will you test the presence of this gas?
Q9. What is a thermite reaction?
Q10. What is meant by the concentration of ore?
Q11. A metal M doesn’t liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and the black-coloured product and also explain the reaction of M with oxygen.
Q12. Name the metals which have been placed:
a.) at the bottom of the reactivity series.
b.) at the top of the reactivity series.
c.) just below copper in the reactivity series
Q13. Give three uses of metals and three uses of non-metals.
Q14. How ionic compounds are formed? State any three general properties of ionic compounds.
Q15. Give reasons:
a.) The oxides of metals like Na, Mg and Ca cannot be reduced by carbon.
b.) Aluminium contains are used to transport nitric acid.
Q16. An ore on heating in air produces sulphur dioxide. Which process would you suggest for its concentration? Describe briefly any two steps involved in the conversion of this concentrated ore into related metal.
Q17. Explain the process of electro-refining of metals.
Q18. a.) Write the balanced chemical equations for the extraction of copper metal from its ore. What is the reducing agent used?
b.) Which reducing agent can be used in the extraction of metals placed at the top of the reactivity series? Give the name of the process also.
c.) What is the chemical substance formed as a green coating when the copper reacts with atmospheric gases in moist conditions?
Q19. Differentiate between metals and non-metals.
Q20. Give equations for the conversion of:
a.) Cinnabar to mercury.
b.) Zinc carbonate to zinc.
c.) Manganese dioxide to manganese
d.) Zinc sulphide to zinc.
Download PDF to access answers of Chemistry Worksheet for Class 10 Chemistry Chapter 3 Metals and Non-metals Set – 3
Download PDF
Read Also:
- Metals and Non-metals
- Metals and Nonmetals Questions
- Properties Of Metals And Non-Metals
- Chemical Properties of Metals
- Chemistry Class 10 Chapter 3 -Metals and Non-metals
- Class 10 Chemistry Chapter 3 Metals and Non-metals MCQs
Recommended Videos
Physical Properties of Metals and Nonmetals
