Physical change- evaporation , condensation
Chemical change- combustion , neutralization
Because group 1a and 2a are most reactive due to their least number of electrons in their outmost shell compared to group 8a(18)
The answer is true.
Explanation:
The balance of trade is nothing but the country's exports minus the country's imports.
Exports means, what you produce in the country and sell it to other countries, whereas imports means what you get or buy from the other countries.
When you export more than you import, you have trade surplus .In that case the income from exports are more than the money spent. So you have a trade surplus.
When you import then you have a trade deficit or your income is low. Most of the countries want a trade surplus.
But when the Income from exports and the money spent on imports are the same , the situation is that of balance of trade equilibrium, where the income from exports is equal to the money its residents pay for the imports.
Answer:
It is the process in which a known amount of solution of known concentration is added to the concentration of the another solution to determine the concentration of unknown solution.
Explanation:
Answer:
Carbon 12 and carbon 13
Carbon isotope 12 exist as 98.9%
Explanation:
