Grade 11 Chem - Unit 1 test (Chapter -2) Exam with Verified Detailed Answers.docx

Grade 11 Chem - Unit 1 test (Chapter
#2) Exam with Verified Detailed
Answers
chemical bonding -
correct answer ✅force of attraction, responsible for keeping
atoms together


Octect rule -
correct answer ✅2-8-8-2


Ionic Bond -
correct answer ✅Metal to Non-metal


Complete transfer of electrons (Ionic) -
correct answer ✅-Write both symbol for element (Ex: Na)
-Write charge of both elements (Ex: Na1 & Cl 1)
-Draw dots (valence) around symbol (Ex:Na=1 & Cl=7)
-Express transfer of electrons from metal to non metal (using
arrows)
-Write symbol and final charge charge (Ex: [Na+] & [Cl-] )


Properties of Ionic compound -
correct answer ✅1. Two oppositely charged ions (+ -)

, Grade 11 Chem - Unit 1 test (Chapter
#2) Exam with Verified Detailed
Answers
2. Solid
3. Good conductors of electricity
4. High melting/boiling point


Why are they good conductors? -
correct answer ✅Ions and Electrolytes are present


Electrolytes -
correct answer ✅Compound when dissolves in water (ionic
compound good at conducting electricity)


Molecular/covalent Compound -
correct answer ✅2 Non-metals


Single covalent bond -
correct answer ✅1 pair of electrons


Double covalent bond -
correct answer ✅2 pairs of electrons