Suppose you combine two substances but no chemical reaction occurs. Which of the following best describes the result?

A. A solution

B. A heterogeneous mixture

C. A mixture

D. A homogeneous mixture

What are signs that a chemical reaction has occured

The whole number mass ratio of copper to sulfur in copper (I) sulfide is 4:1. The whole number mass ratio of copper to sulfur in copper (II) sulfide is 2:1. A 60 g sample of copper sulfide contains 20 g of sulfur.

We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert. Why?

How do the atoms that make up matter affect its characteristics and behavior?

If "solution X" has only partially dissolved in water producing a good amount of hydronium ions, and it turned the indicator or pH paper a orange/red color, what would this solution be considered and why? Explain.

What element gains three electrons to fill its valence energy level? s n al c

Determine the speed of sound at 20 oC in (a) air, (b) helium, and (c) natural gas (methane). Express your answer in m/s.

A solution consists of a solute and a solvent mixed together. for the solution in model 1 identify and provide the symbol for the a. solute. b. solvent.

What is meant by a " chain reaction "?

Describe the direction of the wind movement around the center of high air pressure