When a chemical reaction takes in energy it might feel

A. Hot

B. Cold

C. Boiling

D. Electric

4. Is the mass of the products of a nuclear fission reaction compared to the mass 11 1 F of the original reactants the same, greater, or less?

Which of the following is the best explanation for why finches on one of the islands in the Galapagos have large beaks while finches on another island have small beaks? a.

Now do the same computation for all six pairs of values. What is the average of all six fractions V/ T?

Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this? a. single replacementB. Synthesis c. double replacementD. decomposition

Predict the ideal bond angles around each central atom in this molecule. The formuala is N C N H 2. The central C atom is bonded to one N atom by a triple bond and a second N atom by a single bond.

What does a reaction rate tell you

Which phrase provides the best definition of mass movement

Choose the statement below related to entropy that is correct. Group of answer choicesHeating always decreases the entropy of a system. The solution formation process usually leads to an increase in entropy.

What is the optimal level of humidity for storing wine? A. 70 percent B. 50 percent C. 20 percent D. 10 percent

What is the product? 3•[1 - 4 5 - 7] [3 - 12 15 - 21] [4 - 1 8 - 4] [3 12 15 21] [4 - 12 8 - 21]