When a substance cannot be reduced by physical or chemical means to a simpler form, it is an example of a (n):

mixture

molecule

element

compound

Rocks formed by changes in heat and pressure or the presence of hot

How much heat is removed from the skin by the evaporation of 190 g (about 1/2 cup) of isopropyl alcohol?

During convection, hot material then moves to the side and. This circular pattern is called a convection current.

Which of the following parts of Dalton's atomic theory was incorrect? Elements cannot turn into different elements in chemical reactions. Elements can combine in different ratios in chemical reactions.

The measurement 12.0 km contains significant figures

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?

How many litres of 0.215 m NaCl contains 4.30 mol of this salt? Assume this solvent is H2O I'm confused on this question because little m is molality but when I looked this up on google, someone solved the problem assuming it was molarity

How can a neutral atom become a positively-charged particle?

The last column of the periodic table contains the noble gases, elements that do not easily form chemical bonds.

When pollution is removed from the air by a natural process, it