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Heat and temperature
Lower Sec Science · Secondary 2 · Hard · Heat and temperature
A student mixes calcium oxide with water in a beaker. The temperature of the mixture rises from 26 °C to 44 °C.
Which statement best explains this temperature change?
Which statement best explains this temperature change?
- The reaction is exothermic and releases heat to the surroundings.
- The reaction is endothermic and absorbs heat from the surroundings.
- The water was initially hotter than room temperature, so it kept heating up.
- Stirring the mixture faster produces heat, so the temperature increases.
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