6. What is the test for sulfate ions in a solution?
First make the solution acidic by adding nitric or hydrochloric acid, then add barium chloride, if a sulfate is present a white ppt is formed
First make the solution acidic by adding sulfuric acid, then add barium chloride, if a sulfate is present a white ppt is formed
really confused??
7. What is the solubility trend in sulfates?
The sulfates are more insoluble down the group
The sulfates are more soluble down the group
i dont know
8. The hydroxide are all white solids?
True
False
9. Magnesium has the lowest melting point (does not fit the trend) because the lattice arrangement of atoms is different from the other elements so therefore it easier to separate
True
False
10. what is the trend in atomic radius down group 2 elements?
The atoms get bigger (atomic radii increases) because each element has an extra filled main level of electrons compared to the one above it
The atoms get SMALLER down the group. (atomic radii decreases) because the electrons in the outer shell are closer to the positive nucleus.
The atoms get BIGGER(atomic radii increases) because the electrons in the outer shell are further away from the positive nucleus
