Question 89
Match these words or phrases to the descriptions, a, b, c, d and e. Each word or phrase may be used once, more than once or not at all.
Word bank: burning; decreases; endothermic; increases; exothermic; evaporation; melting ice; magnesium ribbon placed in hydrochloric acid; sodium hydrogencarbonate added to citric acid.
a. An example of a chemical reaction where thermal energy is given out to the surroundings. [1]
b. An example of an endothermic reaction. [1]
c. The temperature in an endothermic reaction. [1]
d. An example of an endothermic process. [1]
e. The type of reaction between calcium and water. [1]
Word bank: burning; decreases; endothermic; increases; exothermic; evaporation; melting ice; magnesium ribbon placed in hydrochloric acid; sodium hydrogencarbonate added to citric acid.
a. An example of a chemical reaction where thermal energy is given out to the surroundings. [1]
b. An example of an endothermic reaction. [1]
c. The temperature in an endothermic reaction. [1]
d. An example of an endothermic process. [1]
e. The type of reaction between calcium and water. [1]
