Physical change or chemical change? Hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat.

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?

Why does asexual reproduction result in offspring with identicle genetic variation

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol