Which of the following is the best evidence
that digestion involves chemical change?
a time is required to accomplish results.
b the products’ mass equals the reactants’
mass.
c different compounds are involved.
d new substances are produced.

The ph of carrots are 5.0 how it is classified a. acidic b. basic c. indicator d. neutral

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)