Crossword Puzzle Flames of ScienceOnline version Explore the fiery world of chemical reactions and laboratory equipment. by Alessia Ferrari 1 A type of gas burner used in laboratories for heating and sterilization. 2 A chemical reaction that involves the rapid combination of a substance with oxygen, producing heat and light. 3 Safe flame 4 The visible, gaseous part of a fire, produced by the combustion of materials. 5 Transparent flame 6 A mixture that can not be separated 7 A form of energy that is transferred between systems or objects with different temperatures. 8 A process in which substances interact to form new products, often involving energy changes. 6 8 1 3 4 7 5 2
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