List four possible clues to a chemical change

Sex of the offspring is determined by ... A. only the mother, because she has two X chromosomes. B. only the father, because he has one X and one Y chromosome. C. an chromosome from the mother and either an X or Y chromosome from the father. D.

Electrons are capable of emmiting engery in the form of light at very narrow ranges of wavelengths. these wavelengths can be measured to find the electrons? A) mass B) density C) energy level D) specific heat

True or false Boyles law states that as tge temperature of a gas increases the volume increases

What does a nucleon mean?

Does the application of heat to a substance always produce a chemical change?

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead (ii) acetate, pb (c2h3o2) 2.

A magnesium atom has 2 valence electrons in its third shell. Which is a TRUE statement about what happens when it forms an ion? A. It will be an anion. B. It will have more electrons than protons. C.

What scientific discoveries led to changes in Dalton's atomic theory?

What does berkelium react with

Classifying living things