What did dmitri mendeleev do?

What was the plum-pudding atomic model

The process for the conversion of a liquid to a gas is called a. sublimation. b. evaporation. c. vaporization. d. condensation.

a neutral atom posseses an atomic number of 15 and an atomic mass or 31. three electrons are gained. what is the result of this conversion?

Convert 0003201 to scientific notation

Which of the following is characterized by existing at a discrete energy level?

The diameter of a carbon atom is approximately 144 pm. Assuming a nanocontainer has a simple cubic structure and have an edge length of 25 nanometers, how many carbon atoms are there on a single edge of a nanocontainer?

How can molecules with polar bonds be nonpolar?

what would the total pressure of a mixture of fluorine, chlorine, and bromine gases be if the partial pressure are 2.20 atm, 6.70 atm, 0.03 atm respectively

Which net change occurs in a nuclear fusion reaction? (1) Ionic bonds are broken. (2) Ionic bonds are formed. (3) Energy is converted to mass. (4) Mass is converted to energy.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine? a. measure the mass of the gas b. measure the speed of the gas molecules c.