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प्रश्न
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 white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.
उत्तर
The white particles of baking soda disappear when put in lemon juice. This means that it is a chemical change.
संबंधित प्रश्न
Write a short note on the information derived from a balanced chemical equation.
Differentiate between in Chemical reaction and chemical equation.
A chemical equation is a statement that describes a chemical change in terms of
Match the pairs.
| a. | Photosynthesis | i. | Tendency to lose electrons |
| b. | Water | ii. | Reactant in combustion process |
| c. | Sodium chloride | iii. | Chemical change |
| d. | Dissolution of salt in water | iv. | Covalent bond |
| e. | Carbon | v. | Ionic bond |
| f. | Fluorine | vi. | Physical change |
| g. | Magnesium | vii. | Tendency to form anion |
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Give an example of a reaction where the following are involved:
Solution
Name: Two carbonates do not produce carbon dioxide on heating.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
________ is a chemical substance which alters the speed of a chemical reaction.
______ occurs in the absence of air and in the presence of micro-organisms such as yeast.
