What is TRUE of a compound? Group of answer choices

It must have water as one of its components

It does not always retain the properties of the substances that make it up

It requires electrical energy to make

It requires heat energy to make

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done