Name the 12 elements in the periodic table

Explain why samples of platinum and copper can have the same extensive properties but not the same intensive properties

What is the relationship between the molecular mass and the molar mass of a substance?

Scientists are studying how substance A and substance B react. When substance A and B are mixed, a substance different from A and B floats to the top of the solution. This is evidence that a (n). physical change occurred. endothermic change occurred.

A sprinter set a high school record in track and field, running 200.0 m in 21.7 s. What is the average speed of the sprinter in kilometers per hour?

Kinetic energy can be transferred from one object to another when?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda