Is hot asphalt poured onto flat ground cools to from a solid road surface a physical or chemical change?

To how many significant figures would you need to express the mass of an hydrogen-1 atom in amu to notice the change in mass that occurs when it gains an electron

How many moles of MgCL2 are there in 311 g of the compound

Papers scattered randomly across the desk represents high entropy and are a good example of which law?

What is needed to change the state of matter

4) How many grams are there in 7.40 moles of AgNO3

What type of reaction is sodium reacting with chlorine

1. If temperature is increased, the number of collisions per second

1. Tonic Bonds are a. Formed when a metal and nonmetal transfer electrons b. Formed when a nonmetal and nonmetal share electrons Formed when a metal forms || bonds with other like atoms d. Formed when noble gases lose electrons

Why does the sun appear to be the brightest star in the sky? A - Its apparent brightness is much greater than other stars. B - It burns more gas, making it brighter than any other star.

What effect does nuclear radiation have on atoms? It splits atoms. It burns atoms. It ionizes atoms.