As a substance changes fees from gas to liquid to solid:

A - the spacing between molecules increased

B - it's density generally increases

C - the spacing between molecules is not affected

D - it undergoes a chemical change

Pizza dough is topped with sauce, cheese, pepperoni, sausage, mushrooms, bell peppers, and olives. What type of mixture is this pizza? A. Homogeneous B. Heterogeneous C. Colloid D. Suspension

What is the most important structural feature of the water molecule

A possible mechanism for the overall reaction represented above is the following. NO (g) + NO (g) → N2O2 (g) slow N2O2 (g) + O2 (g) → 2NO2 (g) fast Which of the following rate expressions agrees best with this possible mechanism?

Air currents move objects in the air. Explain how a convection current might affect the flight of a hot air balloon

State one reason for the color change in beaker A

You are about to open a container of soy milk but notice that there are instructions to "shake well before serving." the soy milk is most likely a

What kinds of elements form an ionic bond?

Two atoms must represent the same element if they both have the same:

Calculate the number of oxygen atoms in 0.0073g of CaSO4 2. H2O?

What are the physical properties of toothpaste