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A combination of two or more chemical elements which are chemically combined and very hard to separate
sande kevin answered the question on December 27, 2017 at 04:11
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What is an element?
Date posted: December 23, 2017. Answers (1)
- Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action(Solved)
Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action
Date posted: December 21, 2017. Answers (1)
- Carbon and silicon are in the same group of the periodic table. Silicon (iv) oxide melts at 2440°c while solid carbon (iv) oxide sublimes...(Solved)
Carbon and silicon are in the same group of the periodic table. Silicon (iv) oxide melts at 2440°c while solid carbon (iv) oxide sublimes at -70°c. In terms of structure and bonding, explain this difference.
Date posted: December 21, 2017. Answers (1)
- Distinguish between a covalent and dative bond(Solved)
Distinguish between a covalent and dative bond
Date posted: December 21, 2017. Answers (1)
- Given a mixture of iron (ii) oxide ammonium chloride sodium chloride and lead(ii) chloride describe how this mixture can be separated to obtain a sample...(Solved)
Given a mixture of iron (ii) oxide ammonium chloride sodium chloride and lead(ii) chloride, describe how this mixture can be separated to obtain a sample of each.
Date posted: December 21, 2017. Answers (1)
- What is bleaching?(Solved)
What is bleaching?
Date posted: December 20, 2017. Answers (1)
- What is the equation for the reaction between aluminum oxide and hydrochloric acid?(Solved)
What is the equation for the reaction between aluminum oxide and hydrochloric acid?
Date posted: December 19, 2017. Answers (1)
- Describe how a double aqueous ammonium ii sulphate can be prepared using the following reagents: aqueous ammonia,dilute sulphuric acid and iron metal.(Solved)
Describe how a double aqueous ammonium ii sulphate can be prepared using the following reagents: aqueous ammonia, dilute sulphuric acid and iron metal.
Date posted: December 18, 2017. Answers (1)
- Explain why the solution of ethane in water does not show acidic properties while that if hydrochloric acid shows(Solved)
Explain why the solution of ethane in water does not show acidic properties while that of hydrochloric acid shows.
Date posted: December 18, 2017. Answers (1)
- Explain how to test for the purity of a liquid(Solved)
Explain how to test for the purity of a liquid
Date posted: December 18, 2017. Answers (1)
- State and explain the observation that would be made when hydrogen chloride gas is bubbled into a solution of silver nitrate(Solved)
State and explain the observation that would be made when hydrogen chloride gas is bubbled into a solution of silver nitrate.
Date posted: December 17, 2017. Answers (1)
- What is chemistry?(Solved)
What is chemistry?
Date posted: December 13, 2017. Answers (1)
- Between methanol and propanol, which has a higher boiling point?(Solved)
Between methanol and propanol, which has a higher boiling point?
Date posted: December 13, 2017. Answers (1)
- Give equations for preparation of lead chloride from lead carbonate(Solved)
Give equations for preparation of lead chloride from lead carbonate
Date posted: December 13, 2017. Answers (1)
- Explain what is observed when carbon (IV) is bubbled through calcium hydroxide solution(Solved)
Explain what is observed when carbon (IV) is bubbled through calcium hydroxide solution.
Date posted: December 11, 2017. Answers (1)
- Write the following abbreviation in full as used in chemistry DDT(Solved)
Write the following abbreviation in full as used in chemistry DDT.
Date posted: December 5, 2017. Answers (1)
- Distinguish between the reducing property of concentrated Hydrochloric acid and concentrated Sulphuric acid(Solved)
Distinguish between the reducing property of concentrated Hydrochloric acid and concentrated Sulphuric acid.
Date posted: December 5, 2017. Answers (1)
- What is fractional distillation?(Solved)
What is fractional distillation?
Date posted: December 4, 2017. Answers (1)
- Other than water give other forms of solvent(Solved)
Other than water give other forms of solvent.
Date posted: December 4, 2017. Answers (1)
- What are miscible liquids?(Solved)
What are miscible liquids?
Date posted: December 4, 2017. Answers (1)