How is a pure substance different from a mixture

Which elements have the greatest tendency to behave as oxidizing agents?

What is the net ionic equation of the reaction below? K2CO3 (aq) + CaCl2 (aq) - -> 2 KCl (29) + CaCO3 (s)

Berny has a 0.15-kilogram candle, a 1.00-kilogram jar, and a 0.25 kilogram candle holder. He places the candle and candle holder in the jar, lights the candle, and then immediately closes the jar.

How do scientist communicate the results of an investigation?

Interesting facts about coal

Student B pushed on a cart against the wall with 500 N of force. The cart didn't move. How do u explain what happened?

What is unique about the way that transition metals form compounds? a. They don't form compounds c. They can form bonds with the electrons in the two outer-most shells b. They are the most reactive d. They can donate all of their electrons

What prompted rutherford to do the alpha particle scattering experiment?

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.