Which process is an example of a chemical change?
a piece of wood shrinking as it dries out
steam rising from a boiling pot of soup
a metal railing rusting in damp weather
alcohol evaporating from a cotton swab

Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?