Which of the following is not a sign that chemical reaction has taken place? a. temperature change
b. formation of a liquid
c. color change
d. formation of a gas

Strong conductivity of plasma allows it to act and react as and

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand