Which of the materials would be able to scratch quartz? a. fluorite b. talc c. diamond d. gypsum

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?

What do many bases have in common? apex chemistry sem 2

What is true according to the second law of thermodynamics