Classifying Matter

Match it! Select the correct answer from the pull down...Good luck!

What is the mass number of an element that has 19 protons, 19 electrons, and 20 neutrons?

A subatomic particle with a negative charge is

Plastic (that makes up water bottles)

Iron-Fe

The charge on a protons is

Aluminum- Al

The charge of an atom is

A clear solution is placed on a microscope slide and allowed to evaporate. When the slide is observed from microscope blue crystals can be seen. Describe the clear solution.