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