What are the only elements that exist in nature as uncombined atoms?

If you mix bacteria with milk what do you make?

Many dinosaur bones are radioactive. Because of this, they are usually painted over with lead paint. Postulate A reason for why some of these very old fossils would have a radioactive signal and where it might be coming from?

How do the number of electrons in an atom's highest energy level affect its reactivity?

Let us assume that cu (oh) 2 (s) is completely insoluble, which signifies that the precipitation reaction with naoh (aq) (presented in the transition) would go to completion. cu2 + (aq) + 2naoh (aq) → cu (oh) 2 (s) + 2na + (aq) if you had a 0.

Identify the double displacement reactions among the following: 1. KCl (aq) + AgNO3 (aq) - AgCl (s) + KNO3 (aq) 2. Na2SO4 (aq) + BaCl2 (aq) →BaSO4 (s) + 2NaCl (aq) 3.

What group of elements has the most stable arrangement in their outer energy level?

Which of the follwing is a pure substance: sugar, salt, water, or pepper? Explain how you know.

A chemistry student needs of isopropenylbenzene for an experiment. She has available of a w/w solution of isopropenylbenzene in carbon tetrachloride. Calculate the mass of solution the student should use.

Can an organism carry out cellular respiration without photosynthesis?

Predict the product for PtCl4 + F2