6. The image above shows information about two different substances in sealed containers. A scientist transfers the same amount of energy into both
substances. One substance changes phase, but the other does not, Which
chemical changed phase, and why did it change?

What is the nature of the ca-cl bond in a molecule of calcium chloride (cacl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.16?

Chromosome 17 is made of over million base pairs.

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space