What type of reaction occurs when two hydrogen atoms collide at high speed combining together into a helium atom: alpha decay, beta decay, fission, or fusion?

Is flammability a form of chemical change or physical change

Which is true about the total mechanical energy in a closed system? O A. It is not conserved. O B. It is zero. O c. It does not change. O D. It is always decreasing.

An aqueous solution contains the following ions: Cl-, K+, Mg{2+}, NO3{-}, SO4{2-}. Is a precipitate likely to form? If so, giv ethe formula of the precipitate. A. MgSO4 B. MgCl2 C. K2SO4 D. No precipitate will form.

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Which will dissolve in water? Na3PO4 or N2? Explain.

An atom in the ground state contains a total of 5 electrons 5 protons and 5 neutrons. Which Lewis electron-dot diagram represents this atom

What type of reaction occurs when two hydrogen atoms collide at high speed combining together into a helium atom: alpha decay, beta decay, fission, or fusion?

Why don't noble gases normally form chemical bonds?

Using the equation MgCl2 - > Mg + Cl2, if 5.00 grams of MgCl2 is given, how many grams of Mg is produced?

Increasing the concentration of a reactant speeds up a reaction. True False