I need help tutoring my daughter with science?

You need the periodic table here. For the first question would probably be P for phosphorous since it is a nonmetal. Nonmetals have are not lustrous if it is not a solid and phosphorous is not a solid. Colbalt and nickel would be the most similar since they are both of the same type of element which is transition elements. To further help your daughter you might want to look on the internet for a colored and labeled periodic table.