Topic # ONE (1) Qt. Complete the following word equations and balanced them then write the half ionic equation.
a) Sodium t Ethanoic acid -
b) Calcium + Sulphuric acid-
c) Aluminium + Hydrochloric acid -
Q2. Complete the following incomplete equations and balance it. Write the overall ionic and net ionic
equations. Assume all reactants in aqueous form.
a) Sulphuric acid + Potassium carbonate-
b) Silver nitrate + Sodium hy ciroxide-
c) Potassium chloride + Lead nitrate-​

Which one of the following gases is not an important component of soil?

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.