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Natural cause of changes in atmosphere is:

What is a advantage of quarrying limestone?

What is name of reaction in which substances are broken down using heat energy?

What is formula for calcium carbonate?

What is the range of pH?

What is the pH of substances when it is neutral?

Which colour show litmus paper when is in acid substance?

Acid + base -> salt + water is the general equation for:

Which gas tested caused that the squeaky pop will be appear?

Elements presented in the calcium carbonate are: