第 1 題
1 分Which of the following processes represents an endothermic change?
GCE O-Level · Science (Physics, Chemistry) (5086)
Chemical Energetics：練習題
5 條多項選擇題即時批改，另有 1 條文字題附完整解題步驟，全部圍繞「Chemical Energetics」。
6 條題目7 分免費，無需登記
第 2 題
1 分When solid ammonium chloride is dissolved in water, the temperature of the solution decreases from \(24.0^{\circ}\text{C}\) to \(18.5^{\circ}\text{C}\).
Which statement correctly describes this process?
第 3 題
1 分When a piece of magnesium metal is added to dilute hydrochloric acid, hydrogen gas is evolved and the temperature of the reaction mixture rises from \(21.0^{\circ}\text{C}\) to \(34.5^{\circ}\text{C}\).
What type of reaction is this, and what is the direction of heat energy transfer?
第 4 題
1 分During a chemical reaction, the temperature of the surroundings increases. Which of the following statements about this reaction is correct?
第 5 題
1 分Which of the following chemical or physical processes is classified as exothermic?
第 6 題
2 分Which of the following processes is classified as an endothermic change?
A) Dissolving ammonium nitrate in water
B) Burning fossil fuels
C) Neutralisation of an acid by an alkali
D) Reaction of sodium with water
先自己寫一次答案，再對照解題步驟。
* thinka提供的內容由AI生成，可能並非總是準確或最新。請將其用作輔助資源，並與官方材料進行核實。
想多做幾條同類題目？立即開始練習呢個課題，即做即批改。
立即練習