8. Which describes the reaction of a substance to form one or more new

substances

A a chemical change

B a physical change

C a change of state

What are two traits that make up an organism?

The substance floats or sinks in another because of its relative

What are some physical characteristics of the Sun?

What are some properties of matter that can be identified without testing or measuring

What happens during a mosquito 6 chromosomes to form eggs.

The energy derived from the movement of H + ions down an electrochemical gradient from the intermembrane space into the matrix is used to drive the synthesis of ATP. How many H + ions must be moved into the matrix for the synthesis of 1 ATP?

Consider two solutions, solution a and solution b. [h+] in solution a is 370 times greater than that in solution b. part a what is the difference in the ph values of the two solutions?

All of the following are possible sources of error in a scientific investigation except for O measuring materials such as mass and volume incorrectly. o recording experimental data incorrectly. o having a constant in your experiment.

Do polyatomic ions have fixed charges?

Which type of organism is used to make bread rise when baking? A. plants B. protists C. yeast D. bacteria