課題八 化學反應與能量

課題八 化學反應與能量

7th - 9th Grade

20 Qs

quiz-placeholder

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課題八 化學反應與能量

課題八 化學反應與能量

Assessment

Quiz

Chemistry

7th - 9th Grade

Hard

Created by

Chemistry Aristo

Used 12+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪項正確顯示碘的標準態?

A. I(s)

B. I2(s)

C. I2(l)

D. I2(g)

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪個過程是吸熱的?

A. 炭的燃燒

B. 利用熟石灰降低土壤的pH值

C. 把辛烷在無氧的環境下加熱以生成丙烷

D. 把氯化鈣與硫酸鈉混合以生成硫酸鈣

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪個反應有對體系作功?

A. 2O3(g) → 3O2(g)

B. H2(g) + O2(g) → H2O2(l)

C. H2(g) + Br2(l) → 2HBr(g)

D. Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g)

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

下列哪項有關圖中反應的陳述不正確

A. 反應混合物的温度上升。

B. 反應向四周釋出熱能。

C. 生成物的總焓少於反應物的總焓。

D. 形成鍵合時釋出的能量少於斷裂鍵合時所需的能量。

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

某反應的內能變化和對外界作的功分別為–256 kJ和+35 kJ。在固定壓強下,該反應的熱能變化是多少?

A. –221 kJ

B. +221 kJ

C. –291 kJ

D. +291 kJ

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

假設下列各個過程中的CCl4質量相同,哪個過程吸收的熱能最多?

A. CCl4(g) → CCl4(l)

B. CCl4(l) → CCl4(g)

C. CCl4(g) → CCl4(s)

D.CCl4(s) → CCl4(g)

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

沸騰1 mol液態BrF3的焓變是多少?

A. –45.5 kJ mol–1

B. +45.5 kJ mol–1

C. –91.0 kJ mol–1

D. +91.0 kJ mol–1

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