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WorksheetsChemistry form 4 - hydrogen, dative and metallic bond
Total questions: 18
Worksheet time: 9mins
What is the basis of hydrogen bond?
Attraction forces between hydrogen atom bonded with another hydrogen atom
Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N)
Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N) with atom (F, O, N) of another molecule
Attraction forces between hydrogen atom with another hydrogen atom of another molecule
Can ammonia, NH3 form hydrogen bonds?
Yes
No
When hair is dry, protein molecules in the hair structure form hydrogen bonds with...
other protein molecules in the same hair structure
water molecules, H2O
other protein molecules from another hair structure
water molecules, H2O which also forms hydrogen bonds with protein molecules from another hair structure
When hair is wet, protein molecules in the hair structure form hydrogen bonds with...
other protein molecules in the same hair structure
water molecules, H2O
other protein molecules from another hair structure
water molecules, H2O which also forms hydrogen bonds with protein molecules from another hair structure
How do you overcome a difficulty in turning the pages of a book when the pages stick together?
Ripping the pages until they are separated
Shake the book until the pages separate
Lick your finger before turning the pages
Blow the pages as hard as you can
How can hydrogen bonds form between cellulose in paper and water molecule, H2O on the finger?
By pouring a bucket of water on the paper
Water molecules, H2O on the wet finger will form hydrogen bonds with cellulose in paper
Can chlorine, Cl2 form hydrogen bonds?
Yes
No
Which of these compounds will have the highest boiling point?
Br2
NaCl
C3H7OH
Cl2
Why can compounds that can form hydrogen bonds have higher boiling points than compounds that cannot form hydrogen bonds?
Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces
Compounds that can form hydrogen bonds need to overcome strong hydrogen bonds
Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces and strong hydrogen bonds
Coordinates bonds are also called ..
ionic bonds
covalent bonds
dative bonds
metallic bonds
What is the meaning of Dative Bond?
a covalent bond between two atoms where one of the atoms provides both electrons that form the bond.
a covalent bond between two atoms where both of the atoms provides both electrons that form the bond.
same with an ionic bond
not exist
Which type of chemical bond is formed in Aluminum wire?
Metallic
Ionic
Covalent
Dative
What is the basis of a metallic bond?
The attraction of neutral metal atoms.
The attraction between positive metal ions and interlocking electrons.
The attraction between protons and neutrons.
The attraction between positive metal ions and free floating electrons.
Electrons that are free to move in metals are called (a) electrons
Why do metals have high melting points?
They don't
All the electrons become delocalised
The negatively charged electrons act as a glue to hold the positively charged ions together.
Why do metals conduct electricity?
They are shiny
The electrons are delocalised and able to move
The electrons are held tightly within the lattice
The electrons are shared between two metal ions
How can dative bond form in hydroxonium ion H3O+?
The pair of electrons not involved in covalent bond in water molecule, H2O will be shared with hydrogen ion H+
Water molecule, H2O and hydrogen ion, H+ will each share one electron
Water molecule, H2O and hydrogen ion, H+ will each share two electrons
How can dative bond form between ammonia, NH3 and hydrogen ion, H+ to form ammonium ion, NH4+?
Ammonia, NH3 and hydrogen ion, H+ will each share one electron
The pair of electrons not involved in covalent bond in ammonia, NH3 will be shared with hydrogen ion, H+
Ammonia, NH3 and hydrogen ion, H+ will each share one electron
