Which of the following is true about an atom of iron and an atom of copper? They have different masses.
Both have the same properties.
They have an equal number of protons.
Both have different types of sub-atomic particles.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

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