Advertisements
Advertisements
Question
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Calcium hydroxide.
Solution
Solid residual product of thermal decomposition of:
Calcium hydroxide | \[\ce{\underset{\text{calcium oxide (quick lime)}}{CaO}}\] | White |
APPEARS IN
RELATED QUESTIONS
How would you show that setting of curd is a chemical change?
Write the missing reactants and products and balance the equations.
\[\ce{KClO3 ->[heat]}\] ___________+ ____________
True or false
New substances are formed in a chemical change.
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Electron ______ is complete in each hydrogen in a hydrogen molecule.
What is a chemical reaction?
Define Electrochemical reaction
Give an example
Multiple choice:
A reaction of a type: AB + CD → AD + CD, involves
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium dichromate.
Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation. State the function of the arrow between the reactants and products.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc nitrate to nitrogen dioxide
Give a balanced equation for the conversion of a soluble lead salt to an insoluble lead salt – formed as a white precipitate.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?
Beating an egg to make a cake is a ______.
Which is used as a catalyst during the process of hydrogenation of oils?
Give an example where heat, light, and sound are produced during a chemical change.
Write the effects of chemical reactions.