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Author: Anonymous (page 38,313)

Which of the following statements concerning halogens is fal…

Posted on: October 17, 2024 Last updated on: July 30, 2025 Written by: Anonymous
Which of the following statements concerning halogens is false?
Continue reading “Which of the following statements concerning halogens is fal…”…

The formula of chloric acid is HClO3.

Posted on: October 17, 2024 Last updated on: July 30, 2025 Written by: Anonymous
The formula of chloric acid is HClO3.
Continue reading “The formula of chloric acid is HClO3.”…

Water and oil-based paint are said to be miscible.

Posted on: October 17, 2024 Last updated on: July 30, 2025 Written by: Anonymous
Water and oil-based paint are said to be miscible.
Continue reading “Water and oil-based paint are said to be miscible.”…

State what happens to the:      a) first ionization energy…

Posted on: October 17, 2024 Last updated on: December 19, 2024 Written by: Anonymous
State what happens to the:      a) first ionization energy from left to right    b) electronegativity from top to bottom     c) reactivity from top to bottom in group 1    d) atomic radius from left to right   
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An atom of U-238 contains:

Posted on: October 17, 2024 Last updated on: December 19, 2024 Written by: Anonymous
An atom of U-238 contains:
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What is the general name of the groups of elements that cont…

Posted on: October 17, 2024 Last updated on: July 30, 2025 Written by: Anonymous
What is the general name of the groups of elements that contain Mn, Au, Pt, Cu, Fe and Cr?       (1 mark) 
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The most reactive metal of the following elements is:

Posted on: October 17, 2024 Last updated on: December 19, 2024 Written by: Anonymous
The most reactive metal of the following elements is:
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The rotting of food is a change that is:

Posted on: October 17, 2024 Last updated on: July 30, 2025 Written by: Anonymous
The rotting of food is a change that is:
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An isotope has:

Posted on: October 17, 2024 Last updated on: December 19, 2024 Written by: Anonymous
An isotope has:
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Balance each of the following equations:  (3 marks each) a)…

Posted on: October 17, 2024 Last updated on: December 19, 2024 Written by: Anonymous
Balance each of the following equations:  (3 marks each) a) H2SO4 + Al(OH)3 → Al2(SO4)3 + H2O b) Ca3P2 + H2O → PH3 + Ca(OH)2 c) C3H7OH + O2 → CO2 + H2O d) Cl2 + CrBr3 → Br2 + CrCl3
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