Chemical Reactions Crossword
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Chemical Reactions Crossword
Across
4. A change which transfers energy from the surroundings. [11]
6. A possible source of danger. [6]
7. A substance made of two or more atoms chemically joined together. [8]
9. A change which transfers energy to the surroundings. [10]
11. A chemical _____ shows how many atoms of each elements are in a compound. [7]
12. The resulting substances in a chemical reaction. [8]
15. Type of reaction in which you cannot get back the substances you started with. [12]
16. The starting substances in a chemical reaction. [9]
17. A change in which atoms are rearranged to create a new substance(s). [8,8]
Down
1. When a chemical reaction occurs, _____ is transferred to or from the surroundings. [6]
2. Something used to speed up a chemical reaction. [8]
3. Changes of state and _____ are physical changes. [10]
5. Protective equipment worn in a lab. [6,7]
7. A chemical reaction with oxygen that gives out light and heat. [10]
8. A chemical reaction in which a compound breaks down into simpler parts. [13]
10. The product in this reaction: carbon + oxygen = _____________. [6,7]
13. A common name for the reaction described in clue 7 down. [7]
14. When observing a chemical reaction, you might feel the chemicals change in _____. [11]
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Chemical Reactions Crossword
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energy
hazard
decomposition
combustion
carbon dioxide
temperature
irreversible
reactants
burning
exothermic
chemical
reaction
dissolving
compound
safety goggles
formula
products
endothermic
catalyst
Chemical Reactions Crossword
Across
4. A change which transfers energy from the surroundings. [11]
6. A possible source of danger. [6]
7. A substance made of two or more atoms chemically joined together. [8]
9. A change which transfers energy to the surroundings. [10]
11. A chemical _____ shows how many atoms of each elements are in a compound. [7]
12. The resulting substances in a chemical reaction. [8]
15. Type of reaction in which you cannot get back the substances you started with. [12]
16. The starting substances in a chemical reaction. [9]
17. A change in which atoms are rearranged to create a new substance(s). [8,8]
Down
1. When a chemical reaction occurs, _____ is transferred to or from the surroundings. [6]
2. Something used to speed up a chemical reaction. [8]
3. Changes of state and _____ are physical changes. [10]
5. Protective equipment worn in a lab. [6,7]
7. A chemical reaction with oxygen that gives out light and heat. [10]
8. A chemical reaction in which a compound breaks down into simpler parts. [13]
10. The product in this reaction: carbon + oxygen = _____________. [6,7]
13. A common name for the reaction described in clue 7 down. [7]
14. When observing a chemical reaction, you might feel the chemicals change in _____. [11]
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Chemical Reactions Crossword - Answers
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