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1.True or false A. When water is added to an acid solution the pH changes. B. A

ID: 860177 • Letter: 1

Question

1.True or false

      A. When water is added to an acid solution the pH changes.

      B. A solution of CO2 in water is acidic

      C As the [H+] in water increases the pH increases                  

      D. All isotopes are radioactive.

      E. When an atom emits beta radiation it becomes a different element.

    F. The major elements in air are nitrogen and argon.

G In two half lives the atoms of an isotope are completely

gone.

H. Agricultural chemicals can be a source of water pollution.

   I. One function of auto catalytic converters is to convert CO to CO2.

       J. 10.0g of O2 gas in a 10.0L container has the same pressure as 10.0g

   of Cl2 gas in a 10.0L container both at the same temperature.

Explanation / Answer

) ............True
B).............True
C) ............True
D) .............False
E)..............True
F) ............False
G).............False
H).............True
I).............True
J)..............False