Viii A B Science Metals And Nonmetals Cbse class 8 science notes chapter 4 materials: metals and non metals. physical properties of metals: metals are: hard to touch. lustrous i.e., freshly cut surfaces of metals have characteristic shining. malleable; the property of metals by which they can be beaten mw thin sheets is called malleability. ductile; the property of metal by which. Solution: (a) phosphorus is a very reactive non metal. (b) metals are good conductors of heat and electricity. (c) iron is more reactive than copper. (d) metals react with acids to produce hydrogen gas. 4. mark ‘t’ if the statement is true and ‘f’ if it is false. (a) generally, non metals react with acids.
Viii A B Science Metals And Nonmetals Hope the information shed above regarding ncert mcq questions for class 8 science chapter 4 materials: metals and non metals with answers pdf free download has been useful to an extent. if you have any other queries of cbse class 8 science materials: metals and non metals mcqs multiple choice questions with answers, feel free to reach us so. The elements of the periodic table can be broken into three different groups: metals, metalloids, and nonmetals. this periodic table shows the three different groups of elements. the metalloid group separates the metals from the nonmetals. elements to the left are metals and nonmetals are to the right. the exception is the element hydrogen. Conductivity. metals (such as iron or copper) are good conductors of heat and electricity. non metals (such as coal or sulphur) are poor conductors of heat and electricity. graphite is an exception as it is a good conductor of electricity. ductility. metals (such as aluminium and copper) are ductile, which means that they can be drawn into wires. For performing activities 3.1 to 3.6, collect the samples of following metals – iron, copper, aluminium, magnesium, sodium, lead, zinc and any other metal that is easily available. activity 3.1. n take samples of iron, copper, aluminium and magnesium. note the appearance of each sample.
Viii A B Science Metals And Nonmetals Conductivity. metals (such as iron or copper) are good conductors of heat and electricity. non metals (such as coal or sulphur) are poor conductors of heat and electricity. graphite is an exception as it is a good conductor of electricity. ductility. metals (such as aluminium and copper) are ductile, which means that they can be drawn into wires. For performing activities 3.1 to 3.6, collect the samples of following metals – iron, copper, aluminium, magnesium, sodium, lead, zinc and any other metal that is easily available. activity 3.1. n take samples of iron, copper, aluminium and magnesium. note the appearance of each sample. Materials: metals and non metals class 8 mcq with answers. multiple choice questions (mcqs) 1. the property of metals by which they can be beaten into thin sheets is called . answer: (d) malleability. 2. the property of metal by which it can be drawn into wires is called . answer: (a) ductility. 3. There are four materials a, b, c and d. a and d are hard and shiny, but b and c are dull and not very hard. identify the metals and non metals from a, b, c and d. answer: a and d are metals. b and c are non metals. question 14. gaurav knows that wires can be made from copper and aluminium.
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