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AP BIOLOGY

1. Chemistry of Life

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2. Cells

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3. Cellular Energetics

0/24

4. Cell Communication and Cell Cycle

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5. Heredity

0/14

6. Gene Expression and Regulation

0/29

7. Natural Selection

0/33

8. Ecology

0/20

AP Biology - Plants and Human Body Systems

0/19

AP Biology - Laboratory review

0/4

AP Biology - Diagnostic exam

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AP Biology - Practice Test 1

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AP Biology - Practice Test 2

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Quiz

1.2.1 Monomers and Covalent Bonds – Exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 6
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 6
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2.
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 7
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 7
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B
C
D
3.
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 8
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 8
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B
C
D
4.
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 9
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 9
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B
C
D
5.
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 10
IGCSE Chemistry 2.5 Simple molecules and covalent bonds - Question 10
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B
C
D
6.
Breaking a covalent bond is
exothermic
endothermic
neither
always spontaneous
7.
Which statement best describes Covalent bond?
The energy required to break a specific covalent bond.
A bond formed by parallel overlap of p orbitals, found in double and triple bonds.
A chemical bond formed by sharing valence electrons.
A model showing shared pairs as lines and unshared pairs as dots.
8.
Which halogen molecule in the chart has the strongest covalent bond?
Dr Dabour Hub Academy - figure 1
Cl₂, with the highest bond dissociation energy (243 kJ/mol)
F₂, because fluorine is most electronegative
I₂, because it is the largest
All are equal because each has a single bond
9.
Why does a covalent bond hold two atoms together?
The nuclei attract each other directly
The electrons repel the nuclei together
Gravity holds the atoms together
Both nuclei are attracted to the shared electron pair between them
10.
The missing value in the table is 4, because carbon usually forms four covalent bonds. True or false?
False, carbon forms 2 bonds
False, carbon forms 6 bonds
True only in diamond
True, the statement is correct
11.
Breaking a covalent bond is endothermic. True or false?
False, it is exothermic
True, the statement is correct
False, it has no energy change
True only for triple bonds
12.
Hydrogen forms only one covalent bond. True or false?
True, the statement is correct
False, it forms two
False, it forms four
True only in water
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Part of 1. Chemistry of Life — see every lesson and quiz in this unit.
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