- 1. Metals are elements whose atoms ionize by electron _________
A) lose
B) gain
C) ion
D) atom
- 2. Non-metals are elements whose atoms ionize by electron ________
A) atom
B) lose
C) gain
D) element
- 3. _________ is a liquid metal at room temperature with a melting point of -39ᵒc
A) Mercury
B) Metal
C) Diamond
D) Element
- 4. Metals are _______ agents because they tend to donate their electrons readily during chemical reactions.
A) producing
B) combining
C) reducing
D) oxidizing
- 5. The positive ions enter into chemical combinations with negative ions or radicals to form _______ compounds.
A) electrovalent
B) ionize
C) covalent
D) ionization
- 6. _________ of metals is the process by which metals are isolated from their ore.
A) Ionisation
B) Extraction
C) Chemical
D) Property
- 7. During electrolysis, the ________ acts as a reducing agent by supplying electrons to the metallic ions in the electrolyte, resulting in the deposition of the free metal.
A) Anode
B) Electrode
C) Cathode
D) Cataion
- 8. 8.
What is the element that ionise to form positive ions by losing electrons____ → Na+ + e-
A) Na
B) Ca
C) AL
D) K
- 9. Sodium and ________ are light, soft metals with low melting point of 97ᵒc and 63ᵒc.
A) Calcium
B) Chlorine
C) Potassium
D) Ion
A) CaC03
B) Ca0H2
C) Ca2HC03
D) Ca2+(OH-)2(aq)
- 11. At the cathode, the _________ ions receive an electron, each to become metallic sodium.
A) Calcium
B) Sodium
C) Ion
D) Chlorine
- 12. At the anode, the _______ ions give up an electron each to become chlorine atom which then pair up to form gaseous chlorine molecules.
A) Iron
B) Chloride
C) Sodium
D) Water
- 13. _______ forms ionic compounds with high melting points. These compounds are water soluble and mostly white.
A) Oxygen
B) Calcium
C) Sodium
D) Iron
- 14. Ethanoic acid reacts reversibly with alkanol to form ______
A) Ester
B) Fat
C) Sugar
D) Liquid
- 15. When an alkanol reacts with a carboxylic acid, an ester and water are formed, this reaction is called an ______ reaction.
A) Esterification
B) Endothermic
C) Oxidation
D) Reduction
- 16. Fats and oil belong to a group of compound known as _______
A) Soaps
B) Lipids
C) Sugar
D) Animals
- 17. In formation of soap, the general process of alkaline hydrolysis of esters by which soap is obtained is called _________
A) Esterification
B) Fatty acid
C) Saponification
D) Glucose
- 18. Fats are ________ and of animal origin.
A) Solid
B) Liquid
C) Plants
D) Temperature
- 19. Oils are __________ mainly from plants and room temperature.
A) Liquid
B) Solid
C) Water
D) Fluid
- 20. The last product of lipid is ______
A) Glucose
B) Amino acid
C) Ester
D) Fatty acid
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