📌 Chemistry Grade 9 - Unit 1: Chemistry and Its Importance
1. What is the scope of chemistry?
A) Only studying chemical reactions
B) Studying matter and its changes
C) Ignoring the environment
D) Focusing on physics
2. How is chemistry related to other natural sciences?
A) It has no connection to other sciences
B) It overlaps with biology
C) It is independent of other sciences
D) It interacts with physics and biology
3. What role does chemistry play in production and society?
A) None
B) Minimal impact
C) Significant impact
D) Negative impact only
4. Which of the following is a common chemical industry in Ethiopia?
A) Textile manufacturing
B) Agriculture
C) Mining
D) Leather processing
5. The modern periodic table is based on the work of:
A) Lavoisier
B) Rutherford
C) Mendeleev
D) Dalton
6. Which type of bonding involves the transfer of electrons?
A) Covalent bonding
B) Ionic bonding
C) Metallic bonding
D) Hydrogen bonding
7. What is the composition of an atom with the same number of protons but different neutrons?
A) Ion
B) Isotope
C) Molecule
D) Compound
8. Who proposed the fundamental laws of chemical reactions?
A) Avogadro
B) Boyle
C) Lavoisier
D) Mendeleev
9. Which subatomic particle has a positive charge?
A) Proton
B) Neutron
C) Electron
D) Nucleus
10. What is the main focus of chemistry?
A) Studying plants
B) Studying animals
C) Studying matter and its changes
D) Studying weather patterns
11. Which element is essential for all organic compounds?
A) Nitrogen
B) Carbon
C) Oxygen
D) Hydrogen
12. What is the relationship between chemistry and biology?
A) They are completely unrelated
B) Chemistry is a subset of biology
C) Biology is a subset of chemistry
D) They overlap in the study of living organisms
13. Which scientist is known for his contributions to the atomic theory?
A) Aristotle
B) Democritus
C) Newton
D) Galileo
14. What is the significance of Mendeleev's periodic table?
A) It classified elements based on atomic number
B) It arranged elements by increasing atomic mass
C) It predicted the properties of undiscovered elements
D) It focused only on metals
15. How does chemistry impact society?
A) It has no relevance in daily life
B) It influences medicine and technology
C) It is limited to laboratories
D) It only affects the environment negatively
16. Which type of bonding involves the sharing of electrons?
A) Ionic bonding
B) Covalent bonding
C) Metallic bonding
D) Van der Waals bonding
17. What is the smallest unit of an element that retains its chemical properties?
A) Atom
B) Molecule
C) Compound
D) Ion
18. What is the most abundant element in the universe?
A) Hydrogen
B) Oxygen
C) Carbon
D) Nitrogen
19. Who discovered the electron?
A) Rutherford
B) Thomson
C) Dalton
D) Mendeleev
20. Which type of bonding is found in metals?
A) Ionic bonding
B) Covalent bonding
C) Metallic bonding
D) Polar covalent bonding
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1. What is the scope of chemistry?
A) Only studying chemical reactions
B) Studying matter and its changes
C) Ignoring the environment
D) Focusing on physics
2. How is chemistry related to other natural sciences?
A) It has no connection to other sciences
B) It overlaps with biology
C) It is independent of other sciences
D) It interacts with physics and biology
3. What role does chemistry play in production and society?
A) None
B) Minimal impact
C) Significant impact
D) Negative impact only
4. Which of the following is a common chemical industry in Ethiopia?
A) Textile manufacturing
B) Agriculture
C) Mining
D) Leather processing
5. The modern periodic table is based on the work of:
A) Lavoisier
B) Rutherford
C) Mendeleev
D) Dalton
6. Which type of bonding involves the transfer of electrons?
A) Covalent bonding
B) Ionic bonding
C) Metallic bonding
D) Hydrogen bonding
7. What is the composition of an atom with the same number of protons but different neutrons?
A) Ion
B) Isotope
C) Molecule
D) Compound
8. Who proposed the fundamental laws of chemical reactions?
A) Avogadro
B) Boyle
C) Lavoisier
D) Mendeleev
9. Which subatomic particle has a positive charge?
A) Proton
B) Neutron
C) Electron
D) Nucleus
10. What is the main focus of chemistry?
A) Studying plants
B) Studying animals
C) Studying matter and its changes
D) Studying weather patterns
11. Which element is essential for all organic compounds?
A) Nitrogen
B) Carbon
C) Oxygen
D) Hydrogen
12. What is the relationship between chemistry and biology?
A) They are completely unrelated
B) Chemistry is a subset of biology
C) Biology is a subset of chemistry
D) They overlap in the study of living organisms
13. Which scientist is known for his contributions to the atomic theory?
A) Aristotle
B) Democritus
C) Newton
D) Galileo
14. What is the significance of Mendeleev's periodic table?
A) It classified elements based on atomic number
B) It arranged elements by increasing atomic mass
C) It predicted the properties of undiscovered elements
D) It focused only on metals
15. How does chemistry impact society?
A) It has no relevance in daily life
B) It influences medicine and technology
C) It is limited to laboratories
D) It only affects the environment negatively
16. Which type of bonding involves the sharing of electrons?
A) Ionic bonding
B) Covalent bonding
C) Metallic bonding
D) Van der Waals bonding
17. What is the smallest unit of an element that retains its chemical properties?
A) Atom
B) Molecule
C) Compound
D) Ion
18. What is the most abundant element in the universe?
A) Hydrogen
B) Oxygen
C) Carbon
D) Nitrogen
19. Who discovered the electron?
A) Rutherford
B) Thomson
C) Dalton
D) Mendeleev
20. Which type of bonding is found in metals?
A) Ionic bonding
B) Covalent bonding
C) Metallic bonding
D) Polar covalent bonding
📄 Comment your Answers
https://t.me/quiz_time11
https://t.me/quiz_time11
Sponsor is this channel join now to support me👇👇👇
https://t.me/time_for_education
https://t.me/time_for_education
For video Lectures check our youtube channel 👇👇👇👇👇👇👇
https://youtube.com/channel/UCLPTQfMXS6we7aTT4g9MwCw