Which of the following cannot be separated by physical means?

A. mixtures

B. solutions

C. elements

D. none of the above

Which of the following is an interaction is responsible for the force of attraction between the particles in a salt crystal? A) proton-proton B) proton-electron C) neutron-electron D) electron-electron

All of the following statements, except one, are important postulates of the kinetic-molecular theory of gases. Which one is not? A. The average kinetic energy of the molecules is inversely proportional to the absolute temperature B.

Suppose that you wanted to form baco3 as a precipitate in an aqueous reaction. what aqueous solutions would you choose as reactants? 1. not possible since baco3 is soluble 2. bacl2 and caco3 3. baso4 and na2co3 4. ba (no3) 2 and k2co3

Why does fossil fuel use in the United States make the U. S. vulnerable to the political wishes of foreign countries? a. The US is a net exporter of fossil fuels. b. Fossil fuels lead to global climate change. c.

What changes igneous or sedimentary rock into metamorphic rock?

What is difference between tempering and aging?

Convert 1.21 kg to grams

What are the 3 factors that can affect the strain of rock?

16. Why can grinding a solid into a fine powder increase the rate of reaction?

What is one difference between a mixture and a compound?