Select the correct unit used for each type of measurement. (Not all options are used)

Identify the pair of isotopes.  

A chemical is placed on a balance in an airtight container. The balance initially reads 150.0 g. What will the balance read after the chemical is ignited and completely burned?

You drop a spherical object into a beaker of water. The density of water is 1.00 g/mL. The density of the object is 0.892 g/mL. What do you expect will happen to the spherical object?

What is potential energy?

Which subatomic particle(s) have +1 charge? There may be more than one selection that apply.  

In the modern periodic table, how are the elements arranged?

The image shows an atomic view of a substance. Note that the same color sphere represents atoms of the same type. Does the image represent an element, a compound, or a mixture?

Label these groups of the periodic table.

The image shows an atomic view of a substance. Note that the same color sphere represents atoms of the same type. Does the image represent an element, a compound, or a mixture?