Carbon-14 is a common isotope of the element. How many electrons

does it contain?

O 14

O 12

O 8

O 6

A good way to organize and record your results and observations is

Given any two elements within a group, is the element with the larger atomic number likely to have a larger or smaller atomic radius than the other element

How can you tell if a lab thermometer contains mercury, a toxic substance? A. The liquid would appear black. B. The liquid would appear silver. C. The thermometer is made of glass. D. The thermometer is made of plastic.

How many grams of NH3 are needed to provide the same number of molecules as in 0.55 grams of SF6?

Adding pure water to a saturated solution (one with solid particles at the bottom) would cause the concentration of that solution to ... A) increase B) Decrease C) Remain the same

Which of the following has mechanical energy? Battery Burger bun Stretched band Visible light

The period of time that occurred from about 4 to 2.5 million years ago is called the?

Explain why ocean temperatures vary by location on Earth's surface.

You and your lab partner are asked to determine the density of an aluminum bar. The mass is known accurately to 4 significant figures. You use a simple metric ruler to determine its size and calculate the results in column A.

The atom of which element is bigger than an atom of calcium? - Be (Beryllium) - Sr (Strontium) - Sc (Scandium) - Mg (Magnesium)