Elements ,compounds and mixtures
Quiz by Aparna Singh
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15 questions
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- Q1If a drink tells you to" SHAKE WELL" before drinking,the mixture in the container isheterogeneoushomogeneous60s
- Q2State true or false. properties of compounds will be the same as the properties of the elements that make up the compoundTrueFalse60s
- Q3Sodium chloride can be broken down into simpler substance by chemical means.so it isa compoundan atoma mixturean element60s
- Q4Study the diagram representing elements,compounds and mixtures shown.Choose the correct statement from the followingY represents a compound and Z represents a mixtureY represents an element and W represents a mixtureX represents an element and W represents a mixture.X represents an element and Z represents a mixture60s
- Q5The smallest part of a compound which still has the properties of that compound is calledsolidmoleculemixtureatom60s
- Q6Which of the following is made up only of one type of atom?Tomato ketchupA drop of waterAluminium foilA crystal of table salt60s
- Q7Elements are sometimes written with two letters. Magnesium is one of these elements.MGmGMgmg60s
- Q8When iron filings and sulphur powder are mixed together at room temperature, which one of the following statements is correct?The sulphur may be separated from the mixture by dissolving it in waterThe iron may be separated from the mixture by using a magnet.A new compound called iron sulphide is formed.They cannot be separated from each other60s
- Q9A beaker containing a black-yellow powder has a magnet put into it. When the magnet is removed, black particles are stuck to it, leaving a yellow powder behind in the beaker. The black-yellow powder is thereforean atoma mixturea compoundan element60s
- Q10A molecule is defined as the smallest part of an element or compound that can exist on its own. Which one of the following is not a molecule?Sodium (Na)Water (H2O)Hydrogen (H2)Sodium chloride (NaCl)60s
- Q11Which one of the following statements about compounds is correct?It is easy to separate a compound into the elements that it is made from.The properties of a compound are the same as the properties of the elements of which it is made upThe elements in a compound are always present in the same ratio.At least one of the elements in and mixture must be a gas.60s
- Q12Identify the pure substances.Wet tissue papertap waterairCommon Salt60s
- Q13Frying pans are usually made from metals. Choose the correct property of metals that corresponds to the function of the above statement.Metals have lustre.Metals are malleableMetals are good conductor of heatMetals are sonorous60s
- Q14Copper wire is an example ofa moleculean elementan atoma compound60s
- Q15Identify the correct symbol for CarbonCCuClCo60s