* 20 POINTS A is made of two or more elements chemically combined.

a.

alloy

b.

mixture

c.

element

d.

compound

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

What are the 4 phases of matter in order of increasing engery content?

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