The direct change of a substance from a solid to a gas is called
a. evaporation
c. condensation
b. sublimation
d. solidification

The direct change of a substance from a solid to a gas is called sublimination. 

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

c. electrical charges of ionic bonds.

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