Is the periodic table organized by ions and what does form the same kinds of ions mean?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Predict the products butane (c4h10) + oxygen —>

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: