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8. Pick out the odd-one from the following: steam,9. Fill in the blanks.a. The substances made up of only one type of atoms are calledis a metal which is liquid at room temperature,c. The composition of ais fixedd. Blood is amixture.e. Air is amixturef. Clean air is amixture10. Which of the following statements are true and which are false?a. Carbon is an element, smoke is a mixture and ice is a compoundb. Coal is an element.c. Benzene is a compound and it contains carbon and hydrogen.d. Brass is a mixture of two elements copper and tin.e. Hydrogen is the most abundant element in the earth's crust.f. A solution of glucose in water is a homogeneous mixture. |
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