Laws of Chemical Combination
Trending Questions
Q.
Is Copper sulphate a mixture or a compound? Why?
Q.
In a chemical reaction, atoms can be created or be destroyed.
True
False
Q. 12.976g of lead combines 2ith 2.004g of oxygen to form lead oxide. Lead oxide can also prpduce by heating lead nitrate and it was found that %age of oxygen present in lead oxide is 13.38%.with the helf of given imf. Illustrate law of constant proportion
Q. Two oxides of certain metal were separately heated with hydrogen and the water is formed when 2 gram of each oxide heated gives 0.25 17 gram and 0.4526 gram water is formed respectively show that law of multiple proportion is obeyed
Q.
1. _________ cannot be separated into two or more simpler substances by chemical methods.
Q. Which of the following property does not describe a compound?
- Constituent atoms are mixed in any proportion by mass.
- It is composed of two or more elements.
- It is a pure substance.
- It has different properties as compared to its constituents.
Q.
What is a compound?
Q. Laws of chemical combination problems
Q. Which of the following are the laws of chemical combination?
- Matter can neither be created nor be destroyed in a chemical reaction
- Atoms are indivisible and indestructible
- In a chemical substance, atoms of different elements are in definite proportions
- It is the atom in an element that takes part in a chemical reaction
