- 1. In this Bonding two or more atoms share electrons to form a stable molecule.
A) Metallic Bonding
B) None of these
C) Covalent Bonding
D) Ionic bonding
- 2. A substance made up of two or more different elements that are chemically combined together in fixed proportions.
A) Metallic
B) None of these
C) Compounds
D) Ionic
- 3. Some chemical compounds can be toxic to living organisms, while others are relatively harmless
A) Solubility
B) None of these
C) Stability
D) Toxicity
- 4. These are compounds that do not contain carbon atoms, or contain them in combination with other elements.
A) Organic compound
B) Ionic compound
C) Inorganic compounds
D) None of these
- 5. In this Bonding electrons are transferred from one atom to another, resulting in the formation of positive and negative ions that are held together by electrostatic forces.
A) Metallic bonding
B) Colevant bonding
C) Inonic bonding
D) None of these
- 6. These are formed by the transfer of electrons from a metal to a non-metal, resulting in the formation of a positively charged cation and a negatively charged anion.
A) Colevant compound
B) Metallic compound
C) None of these
D) Ionicc compound
- 7. These are compounds that contain carbon atoms, typically in combination with hydrogen, oxygen, nitrogen, sulfur, or other elements.
A) None of these
B) Acid
C) Inorganic compound
D) Bases
E) Organic compounds
- 8. These properties describe the physical characteristics of the compound
A) Solubility
B) None of these
C) Chemical properties
D) Physical properties
- 9. Some chemical compounds can conduct electricity, while others are insulators
A) Solubility
B) Physical properties
C) None of these
D) Conductivity
E) Toxicity
- 10. These are compounds that do not contain carbon-hydrogen bonds. They include minerals, metals, salts, and other substances that are important for many industrial processes and biological functions.
A) Inorganic compound
B) Organic compound
C) Acid
D) None of these
- 11. Chemical compounds can be soluble or insoluble in different solvents.
A) Stability
B) Chemical properties
C) Solutability
D) None of these
- 12. This reactions involve the combination of two or more reactants to form a single product.
A) None of these
B) Synthesis
C) Compounds
D) Decomposition
- 13. These are compounds that produce hydrogen ions (H+) when dissolved in water.
A) Colevant compound
B) None of these
C) Ionic compound
D) Acids
- 14. Chemical compounds can be flammable or non-flammable, depending on their chemical structure and composition.
A) Toxicity
B) Flammability
C) None of these
D) Stability
- 15. This reactions involve the breakdown of a single compound into two or more products.
A) Decomposition
B) Compounds
C) Synthesis
D) None of these
- 16. In this bonding the electrons are transferred from one atom to another, resulting in the formation of positive and negative ions that are held together by electrostatic forces.
A) Metallic bonding
B) None of these
C) Ionic bonding
D) Colevant bonding
- 17. In this bonding , two or more atoms share electrons to form a stable molecule. Colevant bonding can be polar or nopolar, depending on the electronegativity difference between the atoms.
A) Ionic bonding
B) None of these
C) Metallic bonding
D) Colevant bonding
- 18. Metals are generally good conductors of heat and electricity.
A) True
B) Yes
C) False
D) No
- 19. What is the meaning of GC in chromatography.
- 20. Are compounds that donate hydrogen ions (H+) when dissolved in water
- 21. Which of the following is an example of inorganic compound
A) Ethanol
B) Melthane
C) Methane glucose
D) Sodium chloride
- 22. Which element is the bases of organic chemistry?
A) Nitrogen
B) Hydrogen
C) Oxygen
D) Carbon
- 23. What was Mendeleev's most significant contribution to
science?
A) He discovered the periodic law and created the periodic table
B) He discovered the atomic nucleus
C) He discovered the electron
- 24. What is the symbol for Silver on the periodic table?
A) Ag
B) Ar
C) None of these
D) Ai
- 25. Which state of matter has particles that are tightly packed and have a fixed shape?
A) None of these
B) Gas
C) Liquid
D) Solid
- 26. what is the molecular formula for table salt (sodium chloride)?
A) Na
B) H2O
C) NaCI
D) None of these
- 27. The field of chemistry that applies chemical principles, techniques, and knowledge to the design, development, and synthesis of pharmaceutical drugs. It involves the study of how drugs interact with biological systems, including the human body, and the discovery of drug molecules that can be used to treat diseases.
- 28. Which state of matter has a definite volume but no definite shape?
A) Liquid
B) Gas solid
C) Plasma
- 29. Which element used to make computer chips?
A) Silicon
B) Iron
C) None of these
D) Gold
- 30. Which state of matter has particles that are tightly packed but can move around each other?
A) Solid
B) Gas
C) None of these
D) Liquid
- 31. Electrons are larger than protons and neutrons
A) True
B) Yes
C) False
D) No
- 32. What type of chemical bond to formed when electrons are shared between two atoms?
A) Metallic bond
B) Colevant bond
C) Hydrogen bond
D) Ionic bond
- 33. A branch of chemistry which the study of the synthesis,properties, and applications of materials, including metals, ceramics, polymers, and composites. It involves the use of chemistry principles and techniques to understand the behavior of materials at the atomnic and molecular level and to develop new materials with tailored properties for specific applications.
- 34. which category of elements is characterized by having two valence electrons?
A) Alkaline earth Metals
B) Transition metal
C) Alkaline metal
D) Noble gasses
- 35. which category of elements is known for their low reactivity and stability due to having completely filled outer electron shells?
A) None of these
B) Boron family
C) Noble gasses
D) Hydrogen
- 36. metals are typically dull and have low reflectivity.
A) False
B) True
C) Yes
D) No
- 37. Which of the following is not a common acid used in chemistry?
A) None of these
B) Sulfuric acid
C) Clorine acid
D) Nitric acid
- 38. what is the process by which a gas changes directly to a solid?
A) Evaporate
B) Sublimation
C) Desposition
D) None of these
- 39. which of the following compounds is an acid?
A) HCI
B) NAOH
C) H2O
D) None of these
- 40. Which of the following is a characteristic of organic compound?
A) It has a high melting and boiling point
B) It has a fixed composition
C) None of these
D) It contains carbon and hydrogen
- 41. it is a branch of chemistry that deals with the study of carbon-containing compounds which are also known as organic compounds
- 42. what is the name of the compound with the chemical formula co2?
A) Carbide
B) Carbon monoxide
C) Carbon dioxide
D) Carbonate
A) Metallic bonds
B) None of these
C) Hydrogen bonds
- 44. Which of the following statements defines a chemical compounds?
A) None of these
B) A pure substance composed two or more elements
C) A pure substance composed of only one element
D) A mixture of two or more substances
A) Substance
B) Atom
C) Element
D) None of these
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